Users can remove their own messages from an internal chat room if the Can suppress own messages entitlement is enabled at pod and user-level. If desired, you can also set a time limit on how long users are able to remove a message after they have sent it.
Note: This feature is only available in Symphony version 20.3.3 or above.
Change the time limit for message removal by following these steps:
1. In Symphony, select the Settings icon (Figure 1):
Figure 1 Settings
2. Select Admin Portal.
Note: This option is only available if you're a designated Administrator with Admin Portal access.
3. Select Begin Session.
Note: Session Objective and Comments are optional fields and are not required to access the Admin Portal.
4. Navigate to Edit Entitlements under Company Settings (Figure 2):

Figure 4 Permanently remove this message?
Figure 2 Edit Entitlements
5. Navigate to User Message Suppression under Pod-Level Entitlements, enable Time limit for message suppression (minutes) and enter the desired time limit (Figure 3):