Hello Gina,
You can certainly do this. All you have to do is edit the role for your agents the permissions I believe should be:
- To be eligible for callback interactions: Conversation > Callback > Accept
- To use the schedule option to create a callback: Conversation > Callback > Create
Once you remove these from the agents role they should not be able to create callbacks.
Cheers,
------------------------------
Cam
Online Community Manager/Moderator
------------------------------