Use Internal Messages to communicate with other users or user groups who have access to Bp Event.
Go to the Communication tab on the function bar.
Click on the dropdown triangle next Internal messages, then select New and your company if applicable.
The text tab of the internal message will open.
Alternatively, open a new internal message by clicking on New in the toolbar of the list of internal messages accessible through the window title of any record.
There is also an option of directly creating an internal message linked to the record in many types of records.