New Page after a Group Prints

How can I force a new page after a group has been printed?
Ex:
Group 1a (can be on many pages)
Group 1b (needs to stay hidden until Group 1a prints)
Group 1a Footer Prints.
Then For a new page then... Group 1b prints (which takes up the whole page)Check the 'New Page after' in the 'Section Expert' for the GF1a.