Note: Only organization owners and admins can edit users.
Editing users can be done via the Users tab in Organization settings.
To edit a user:
In the web app, access organization settings by clicking the name of the space in the top left navigation, and then clicking “Organization settings”.
Click the Users tab in the navigation bar.
Either select the user you want from the list, or type their name in the search bar. Hover over their name, and click the Edit button.
From here, you can edit the spaces they belong to, remove them from a team, change their organization or space role, or remove them from the organization entirely.