GUIDE: Tab order between panels

I inherited a fairly complex GUI, appropriate for the application though.

Tab order was fairly random as it had not been addressed. I can use the GUIDE tab order menu to adjust the order inside an individual sub-panel which is an improvement but I don't see anyway to "get it right". I have 2 problems.

#1 The figure is made up of 2 rows of sub-panels, when you hit tab at the last widget in one sub-panel it does not go to the next sub-panel (in my definition of next). How do you control which sub-panel it goes to next?

#2 Some of the sub-panels have overlapping sub-panels. In other words if a drop down menu selects A you get a sub panel with text boxes 1,2 and 3 but if the drop down is on B you get text boxes 4 and 5. How do I get the hidden panel out of the tab list?

Thanks for reading this.

Joe