Clover Stations, Mini's, and Flex's cannot support Multi MID in anyway. However Clover GO can.
To use Clover Go for Multi-MID, the operator has to be on each account as an admin with their email address added to their employee profile.
Once they are added to all MIDs that will be used, they will login to the Clover GO app on a phone or tablet, and when they click the options menu on the left they will see a "Switch Location" tab.
There they will be able to switch to whichever MID they are needing switched to.