Can't install purchased maps in Basecamp Mac

I just bought (download option) a Spain Topo Map for my Fenix 6. I also wanted to have it on my Basecamp but in Garmin Express I can't see the option of installing it to the Mac computer.

It's really silly that, after purchasing a map I have to connect the device to see it in Basecamp.

Am I missing anything?

Thanks in advance.