This page showes you the station with the pannel put in place.
Just like with the main frame, there is also no futher mounting for the pannel needed. The sides of the plastic box slighly press against the pannel and firmly hold it in place. There is also no mechanical force that could move it around or such.
The picture also show the fork I use to hold the PCB into the tanks. The fork is made so as it also forms the cathode during the electrolytic process. Also note the white little clamp which allows to very quickly adjust to the hight of the PCB.