Dash Power Relay/Switch for Cargo are Blue Seas Accessory Panel

I have a blue seas 4366 belowdeck power accessory panel installed in the Cargo area that I run my dometic fridge and weboost from which is connected along the passenger side footwell and thru firewall to my secondary battery. My main switch unit is my SP-9100 that controls all my lighting from my primary battery. in between the 2 is a redarc bcdc charger. I would like to be able to control power to the blue seas panel in the rear from the dash using just a push button in an OEM blank switch space. this is for times my fridge is off but i want to toggle the weboost of/on while driving. Is this as simple as adding a relay inbetween the secondary battery and the blue seas panel? am i overthinking this or is there a better way to do this?