Allow role assignments
Note: You are currently viewing documentation for Moodle 3.3. Up-to-date documentation for the latest stable version of Moodle is probably available here: Allow role assignments.
Location: Administration > Users > Permissions > Define roles
The Allow role assignments page is for setting which roles each role can assign other users to. These roles are also available in the "Switch role to..." drop-down menu for users with the moodle/role:switchroles capability.