I have several panels with individual pointers and I need to change their position uniformly. Is there any way that I can write one function to group them together so that I don't have to write a separate pos_x/pos_y for each panel?

You can put those panels in an array or a list and iterate over the panel list and reposition them accordingly.

You can interate over all Panels using 'ptr_first'. Check out the manual for an example.