Hi @Bachi,
I believe if they already have an ActivePieces account of their own before being invited to your team, they need to click ‘Projects’ and switch to the Team workspace. (Click their Profile Icon for dropdown (In my case the D)).
Just be aware, when inside flows you have already created (unless it has been updated since my comment to a post here) they will also be able to access your connections to things like OpenAI API key, and Google Drive, which will also allow to to edit or create files and folders in your personal connections.
You can read more about it in my comment.
Kind regards,
GunnerJnr