We can do it with custom work or you can use a plugin, that is using a map with multiple pins.

Yes, you need to add an extra map address in customizer -> map settings. you can do that in /include/admin-config.php

then you need to pass that address similar to first address in /include/scripts-config.php

Lastly, you need to use the address in /core/js/contact.js similar to first address.

Yes, custom work will cost you and you may not be comfortable with that.

Hello Giulia, we have a flat rate of 50 Eu / hr - and we estimate this to be 1 hour. Let us know. in case you decide for it we need wp admin access with full rights using Appearance -> Theme file editor so we can modify some files.