This work item allows the user to see a specific set of objectives and offers easy access to complete objectives within a call.
This work item will list all call objectives for the specific account. It will only load your objectives and will not show other user's objectives.
The users have the the same functionality in the work item such as adding and editing objectives as in the menu item outside of a call, however, it is limited to the account in the call.
For further information, you can refer to the work item articles here.