How to add Mame to Multiarcade icade 60in1 Jamma VGA

Complete noob here. I have a multicade icade with a 60in1 jamma board. VGA output to lcd.

I would like to add or convert this to a mame system. Am I correct that since it is an lcd screen that all I would need is a pc running a mame emulator to do this?
Is there any way to have a switch to go between the jamma board and mame?

There are Jamma switchers out there