diff --git a/app/javascript/dashboard/api/inbox/conversation.js b/app/javascript/dashboard/api/inbox/conversation.js
index 9f6b8baf1..22548499d 100644
--- a/app/javascript/dashboard/api/inbox/conversation.js
+++ b/app/javascript/dashboard/api/inbox/conversation.js
@@ -105,6 +105,16 @@ class ConversationApi extends ApiClient {
       custom_attributes: customAttributes,
     });
   }
+
+  fetchParticipants(conversationId) {
+    return axios.get(`${this.url}/${conversationId}/participants`);
+  }
+
+  updateParticipants({ conversationId, userIds }) {
+    return axios.patch(`${this.url}/${conversationId}/participants`, {
+      user_ids: userIds,
+    });
+  }
 }
 
 export default new ConversationApi();
diff --git a/app/javascript/dashboard/store/index.js b/app/javascript/dashboard/store/index.js
index 481c6f107..632c14d2c 100755
--- a/app/javascript/dashboard/store/index.js
+++ b/app/javascript/dashboard/store/index.js
@@ -23,6 +23,7 @@ import conversations from './modules/conversations';
 import conversationSearch from './modules/conversationSearch';
 import conversationStats from './modules/conversationStats';
 import conversationTypingStatus from './modules/conversationTypingStatus';
+import conversationWatchers from './modules/conversationWatchers';
 import csat from './modules/csat';
 import customViews from './modules/customViews';
 import dashboardApps from './modules/dashboardApps';
@@ -66,6 +67,7 @@ export default new Vuex.Store({
     conversationSearch,
     conversationStats,
     conversationTypingStatus,
+    conversationWatchers,
     csat,
     customViews,
     dashboardApps,
diff --git a/app/javascript/dashboard/store/modules/conversationWatchers.js b/app/javascript/dashboard/store/modules/conversationWatchers.js
new file mode 100644
index 000000000..d8da9cdb8
--- /dev/null
+++ b/app/javascript/dashboard/store/modules/conversationWatchers.js
@@ -0,0 +1,90 @@
+import Vue from 'vue';
+import types from '../mutation-types';
+import { throwErrorMessage } from 'dashboard/store/utils/api';
+
+import ConversationInboxApi from '../../api/inbox/conversation';
+
+const state = {
+  records: {},
+  uiFlags: {
+    isFetching: false,
+    isUpdating: false,
+  },
+};
+
+export const getters = {
+  getUIFlags($state) {
+    return $state.uiFlags;
+  },
+  getByConversationId: _state => conversationId => {
+    return _state.records[conversationId];
+  },
+};
+
+export const actions = {
+  show: async ({ commit }, { conversationId }) => {
+    commit(types.SET_CONVERSATION_WATCHERS_UI_FLAG, {
+      isFetching: true,
+    });
+
+    try {
+      const response = await ConversationInboxApi.fetchParticipants(
+        conversationId
+      );
+      commit(types.SET_CONVERSATION_WATCHERS, {
+        conversationId,
+        data: response.data,
+      });
+    } catch (error) {
+      throwErrorMessage(error);
+    } finally {
+      commit(types.SET_CONVERSATION_WATCHERS_UI_FLAG, {
+        isFetching: false,
+      });
+    }
+  },
+
+  update: async ({ commit }, { conversationId, userIds }) => {
+    commit(types.SET_CONVERSATION_WATCHERS_UI_FLAG, {
+      isUpdating: true,
+    });
+
+    try {
+      const response = await ConversationInboxApi.updateParticipants({
+        conversationId,
+        userIds,
+      });
+      commit(types.SET_CONVERSATION_WATCHERS, {
+        conversationId,
+        data: response.data,
+      });
+    } catch (error) {
+      throwErrorMessage(error);
+    } finally {
+      commit(types.SET_CONVERSATION_WATCHERS_UI_FLAG, {
+        isUpdating: false,
+      });
+    }
+  },
+};
+
+export const mutations = {
+  [types.SET_CONVERSATION_WATCHERS_UI_FLAG]($state, data) {
+    $state.uiFlags = {
+      ...$state.uiFlags,
+      ...data,
+    };
+  },
+
+  [types.SET_CONVERSATION_WATCHERS]($state, { data, conversationId }) {
+    Vue.set($state.records, conversationId, data);
+  },
+};
+
+export default {
+  namespaced: true,
+  state,
+  getters,
+  actions,
+  mutations,
+};
diff --git a/app/javascript/dashboard/store/modules/specs/conversationWatchers/actions.spec.js b/app/javascript/dashboard/store/modules/specs/conversationWatchers/actions.spec.js
new file mode 100644
index 000000000..115c505ce
--- /dev/null
+++ b/app/javascript/dashboard/store/modules/specs/conversationWatchers/actions.spec.js
@@ -0,0 +1,62 @@
+import axios from 'axios';
+import { actions } from '../../conversationWatchers';
+import types from '../../../mutation-types';
+
+const commit = jest.fn();
+global.axios = axios;
+jest.mock('axios');
+
+describe('#actions', () => {
+  describe('#get', () => {
+    it('sends correct actions if API is success', async () => {
+      axios.get.mockResolvedValue({ data: { id: 1 } });
+      await actions.show({ commit }, { conversationId: 1 });
+      expect(commit.mock.calls).toEqual([
+        [types.SET_CONVERSATION_WATCHERS_UI_FLAG, { isFetching: true }],
+        [
+          types.SET_CONVERSATION_WATCHERS,
+          { conversationId: 1, data: { id: 1 } },
+        ],
+        [types.SET_CONVERSATION_WATCHERS_UI_FLAG, { isFetching: false }],
+      ]);
+    });
+    it('sends correct actions if API is error', async () => {
+      axios.get.mockRejectedValue({ message: 'Incorrect header' });
+      await expect(
+        actions.show({ commit }, { conversationId: 1 })
+      ).rejects.toThrow(Error);
+      expect(commit.mock.calls).toEqual([
+        [types.SET_CONVERSATION_WATCHERS_UI_FLAG, { isFetching: true }],
+        [types.SET_CONVERSATION_WATCHERS_UI_FLAG, { isFetching: false }],
+      ]);
+    });
+  });
+
+  describe('#update', () => {
+    it('sends correct actions if API is success', async () => {
+      axios.patch.mockResolvedValue({ data: [{ id: 2 }] });
+      await actions.update(
+        { commit },
+        { conversationId: 2, userIds: [{ id: 2 }] }
+      );
+      expect(commit.mock.calls).toEqual([
+        [types.SET_CONVERSATION_WATCHERS_UI_FLAG, { isUpdating: true }],
+        [
+          types.SET_CONVERSATION_WATCHERS,
+          { conversationId: 2, data: [{ id: 2 }] },
+        ],
+        [types.SET_CONVERSATION_WATCHERS_UI_FLAG, { isUpdating: false }],
+      ]);
+    });
+    it('sends correct actions if API is error', async () => {
+      axios.patch.mockRejectedValue({ message: 'Incorrect header' });
+      await expect(
+        actions.update({ commit }, { conversationId: 1, content: 'hi' })
+      ).rejects.toThrow(Error);
+      expect(commit.mock.calls).toEqual([
+        [types.SET_CONVERSATION_WATCHERS_UI_FLAG, { isUpdating: true }],
+        [types.SET_CONVERSATION_WATCHERS_UI_FLAG, { isUpdating: false }],
+      ]);
+    });
+  });
+});
diff --git a/app/javascript/dashboard/store/modules/specs/conversationWatchers/fixtures.js b/app/javascript/dashboard/store/modules/specs/conversationWatchers/fixtures.js
new file mode 100644
index 000000000..6b1ed4def
--- /dev/null
+++ b/app/javascript/dashboard/store/modules/specs/conversationWatchers/fixtures.js
@@ -0,0 +1,14 @@
+export const data = [
+  {
+    id: 1,
+    name: 'Uno',
+  },
+  {
+    id: 2,
+    name: 'Dos',
+  },
+  {
+    id: 3,
+    name: 'Tres',
+  },
+];
diff --git a/app/javascript/dashboard/store/modules/specs/conversationWatchers/getters.spec.js b/app/javascript/dashboard/store/modules/specs/conversationWatchers/getters.spec.js
new file mode 100644
index 000000000..4bdcb3950
--- /dev/null
+++ b/app/javascript/dashboard/store/modules/specs/conversationWatchers/getters.spec.js
@@ -0,0 +1,22 @@
+import { getters } from '../../conversationWatchers';
+import watchersData from './fixtures';
+
+describe('#getters', () => {
+  it('getByConversationId', () => {
+    const state = { records: { 1: watchersData } };
+    expect(getters.getByConversationId(state)(1)).toEqual(watchersData);
+  });
+
+  it('getUIFlags', () => {
+    const state = {
+      uiFlags: {
+        isFetching: false,
+        isUpdating: false,
+      },
+    };
+    expect(getters.getUIFlags(state)).toEqual({
+      isFetching: false,
+      isUpdating: false,
+    });
+  });
+});
diff --git a/app/javascript/dashboard/store/modules/specs/conversationWatchers/mutations.spec.js b/app/javascript/dashboard/store/modules/specs/conversationWatchers/mutations.spec.js
new file mode 100644
index 000000000..781e8eaa8
--- /dev/null
+++ b/app/javascript/dashboard/store/modules/specs/conversationWatchers/mutations.spec.js
@@ -0,0 +1,37 @@
+import types from '../../../mutation-types';
+import { mutations } from '../../conversationWatchers';
+
+describe('#mutations', () => {
+  describe('#SET_CONVERSATION_WATCHERS', () => {
+    it('sets an individual record', () => {
+      let state = {
+        records: {},
+      };
+
+      mutations[types.SET_CONVERSATION_WATCHERS](state, {
+        data: [],
+        conversationId: 1,
+      });
+      expect(state.records).toEqual({ 1: [] });
+    });
+  });
+
+  describe('#SET_CONVERSATION_WATCHERS_UI_FLAG', () => {
+    it('set ui flags', () => {
+      let state = {
+        uiFlags: {
+          isFetching: true,
+          isUpdating: false,
+        },
+      };
+
+      mutations[types.SET_CONVERSATION_WATCHERS_UI_FLAG](state, {
+        isFetching: false,
+      });
+      expect(state.uiFlags).toEqual({
+        isFetching: false,
+        isUpdating: false,
+      });
+    });
+  });
+});
diff --git a/app/javascript/dashboard/store/mutation-types.js b/app/javascript/dashboard/store/mutation-types.js
index 0f801eac9..97801bb33 100755
--- a/app/javascript/dashboard/store/mutation-types.js
+++ b/app/javascript/dashboard/store/mutation-types.js
@@ -258,4 +258,7 @@ export default {
   ADD_MACRO: 'ADD_MACRO',
   EDIT_MACRO: 'EDIT_MACRO',
   DELETE_MACRO: 'DELETE_MACRO',
+
+  SET_CONVERSATION_WATCHERS_UI_FLAG: 'SET_CONVERSATION_WATCHERS_UI_FLAG',
+  SET_CONVERSATION_WATCHERS: 'SET_CONVERSATION_WATCHERS',
 };