Assigning Multiple Categories

Hello,
I need to add multiple categories to a project. Is there a possibility to do this?

I recognized that this is possible with the tags, but in the latest version I cannot save the assigned tags. Could you please check this?

Thank you very much for your prompt feedback.

Best regards,
Bjoern

Please access the database via a local MySQL client, because I don't have a cpanel account only for this individual account.

Port: 3306

Database name: runge-BV-2026

Thank you very much Jackie, now it’s working as it should.
Is there a possibility to display Tags instead the category on the different projects. runge-ag.ch/projekte-runge