If the minutes for a created meeting have already been signed using another service or on paper, you can upload the signed minutes to the meeting.
In the final part of the meeting process, you can upload a PDF of already signed minutes. Continue by clicking "Mark as signed". The meeting will then be archived.
If you instead wish to add historical meetings to Boardeaser, you can find more information in the guide Historical meetings
If you want to use the meeting process but have externally written agendas/protocols, you can refer to the guide Upload external agenda and/or protocol