Selecting a particular portgroup for frameworks on Photon Controller

Continuing my education on Photon Controller, I was trying to figure out how I would select a particular VM network (port group) for containers to use when I was deploying a particular framework on top of Photon Controller. Let’s say for instance that I had two VM Networks, one using VLAN 51 and another using VLAN 30. Initially I thought the frameworks would choose the default “VM Network” but quickly realized this was not the case. How then would I select the correct one for my framework?