Content persistence means that all the content (images, videos, notes and drawings) that you make in a room will be permanently available in the VR room.
When you finish a session in VR, if you have content persistence activated, everything you have in the room will reload next time you log in. In other words, you can resume your work from where you left off at the last session without having to extract or recreate your content.
Meetings are not content persistent. Only organisation rooms have content persistence activated (you will find these under the tab “Rooms” on the web portal.