Admins can create a group of users and limit their credit. Here's how:
Click the "Team" tab in the top panel.
You will see 3 sections: Members, Groups, and Invites.
To create a group:
Step 1: Create a group
Go to the Team/Groups section and click the "Create group" button. Type in the group name and click Save.
Step 2: Populate the group
Go to the Members section.
Check the box next to any member you wish to add to the group.
Click on Move to Group.
Select the name of the group to which you wish to add the members (the group you just created, or another).
You can also add individual contacts to a group by clicking on (●●●) button on the right.
***Please note that only Enterprise, and Corporate plans (or higher) can access this feature.