Secondary SIM for Staff use only

I would like to make a feature request for any singular modem.

I have a customer who would like to use a SIM for staff use only. Currently, they have two SSID: one for the passenger and one for the staff. When they cross the border in Canada they would like to use a secondary SIM (T-mobile) and be used for the staff SSID only and when they go back in the US he wants to use the primary SIM (Verizon) for both SSID.

I understand that currently, it is only available for a dual modem device where we can set each SSID up on a separate VLAN and create rules allowing the Passenger VLAN out just the Verizon and allow the Staff VLAN out both based on priority.

It would be great if these settings can be made for singular modems as well.

Thanks,
Josephine
SinglePoint