Set up Artefakt for your school
A one-time setup. Once it's done, your teachers can add Artefakt to assignments in Microsoft Teams and Google Classroom.
Troubleshooting
Provisioning can take time to propagate. Have teachers fully sign out and back in, and confirm they're in a group / OU that Artefakt was made available to.
Adding apps may require a higher-level admin role. Identify who holds app-approval rights in your Microsoft / Google environment and route the approval to them.
Complete both branches above — they're independent.