If you have the correct permissions, you can change users roles and permissions for individual team members within the Team Members management area. You can get there by clicking your name in the upper right and selecting "Account Admin" in the dropdown menu. From there, select the "Team Members" tab in the top left. Once there, follow the step-by-step process below.
- Find the team member you wish to update and hover on their row.
- Click the View/Edit User link within that row to display the Edit Team Member overlay.
- Change the users role as needed for each per calendar.
- Click Apply Changes to confirm the change.
For more information on team member management and user roles check out this deep-dive article.