Classic mini switch panel fastenings?

I have a rover mini city e and the other day when I pulled the choke out, the switch panel pulled out with it at that one side. I found the nut on the floor today, but not the bolt. Although I can get another bolt to use, I don't really know how the bracket that holds it on works as I can't get to see it. Can someone tell me the best way to put it back on and also maybe get me a link to a bracket so I can see how it works. Any help will be greatly appreciated as it is becoming a pain holding the switch panel everytime I pull the choke out!