Call up the profile of the person concerned via the user administration. You can find this in the drop-down menu in the header at the top right. Then find the person using the search bar.
Tap on the tile to open the profile. Click on "Permissions". The following menu appears.
These are the standard permissions for teachers. The toggles on the side can be switched on and off by clicking on them. Make your selection and tap "Save" to finish.
Note: Student and parent accounts do not have permissions by default.