PIs can grant manager access to their projects to allow for a trusted graduate student or lab director to manage the user accounts and subscriptions on their projects. This is done on a per project basis so if you want a TA or graduate student to manage the project you're using for your course but not your main research project, this is possible.
To grant a user manager access, go to the project you'd like them to have access to, click on the folder icon next to their username. Then change the drop down option from User to Manager. When you return to the Project Description view you will now see that user listed as a manager.
When that user logs into Coldfront, he/she will see your project and be able to add/remove users and request new subscriptions.
If at any time, you want to remove this elevated access, simply go back into the user editor and change the Manager to User in the drop down list.