Hi Renato,
I'm not sure that this is quite what I intended. The automation suggestion, it seems this would create a card each first Monday of the month, and notify individuals that it has been created.
However, I'm thinking of something more like a recurring meeting appointment in Outlook. It would populate the Trello calendar for the full year. So if members are planning on scheduling something else, they know to pick a different day and time.
We are a volunteer organization, so don't work at the same company and don't have a shared calendar.
-Patty