Set up and edit email signatures for other users

This is a huge painpoint for me right now as we are getting set up in Hubspot. We have 20+ potential email senders and getting each of them to individually set up their own signatures in a system they won’t regularly be logging into is a pain and leaves too much possibility for our emails to be going out with a blank signature where someone has not taken action to set one up. Since they are marketing emails, it would be best for marketing to be able to set up signatures for them.