The link below will share information/resources around adjusting user access. On the right side of the page, you will see the second option down titled "Edit a User Access Role." That should walk you through the steps.
User Access Roles (powerschool-docs.com)
Worse case, if that doesn't provide enough assistance, you can always put in a support ticket or use the chat to have someone from PowerSchool walk you through the steps.
Best of luck!
