Ricky, here’s some suggestions for the next update that you should consider re subject:
1. Make the hidden group icon a different color than just gray so that is stands out better.
2. Change the display of a visible group family that has a hidden group within it. Currently, you can’t find the hidden group unless you are very rigorous about naming groups and all of their subgroups or going down the list to open all closed groups.
3. Add a command to OPEN ALL GROUPS.
4. Add a command to UNHIDE ALL GROUPS.