Change User Roles in a custom SharePoint Site
Follow this guide if your site was created without the help of ITS. Follow the Add others to a SharePoint Site if ITS created your site for you.
This article covers how site owners can change user roles in a SharePoint site.
Changing Roles Between Member and Owner
Navigate to s.uconn.edu/sharepoint.
Click on your site, then click on [#] members in the top right.
Find the member you would like to change and click the dropdown arrow next to their membership status (this will say Owner or Member).
Choose the new role this user should have.