Why can't my users share meetings or email with the sales application?

If your users report issues with sharing meetings or emails, verify the status of activities related to these business objects and enable them. For example, if your users are facing issues with sharing emails, verify if an activity for Email exists.

This activity must be in the Manage Activity Type and Subtype task in the Setup and Maintenance work area. Ensure that Appointments, Call Reports, and Tasks check boxes are turned on for that activity and set a start date. If you don't find one, add an activity with the Name and Code as 'Email' and enable the check boxes. Save the activity. Do the same if your users have issues with sharing appointments and other business objects as well.