Imagine a typical home network setup like this:
Laptop -- Wireless NAT Router -- Cable Modem
Networked Printer --^
Based on your setup, when you at home, select Bridged mode for the VM, the VM should get a DHCP IP from wireless NAT router such as 192.168.0.x, and printer also get a DHCP IP address from router, you should be able to add the printer to the VM since it's in the same network.