Sonicwall GVC access all remote sites...

My company has multiple sonicwalls all connected over the internet using VPN polocies. Some of the larger markets have global VPN client licenses. However when I connect from home using the GVC I can only access the specific network I just remoted into. For example if the network I connected to was 192.168.4.xxx I can only access items on that network. But if I'm in the office I can access any network we are VPN connected to. What I'd like to be able to do, if it's even possible, is use the GVC from home to remote into the 4.xxx network and access any of the VPN sites such at 1.xxx, 2.xxx, etc...