The Xojo IDE has some really helpful features you may not even be aware of! In the Navigator there are lots of items shown- some of which you may want to see all the time, some you may not.
Did you know that you can choose to Hide or Show the contents of any major group?
If you hover over the right hand edge of the row that holds the header a toggle appears saying Show or Hide.
If you Hide something you end up wanting back, just hover over the Show toggle and click to show it again!