Manual input in Matrix schedule for guests etc.

Really need this feature! It's becoming increasingly frustrating that I can't input a name for information purposes when looking at the schedule. We're not going to be able to add occational visiting speakers or one-off's to users, but we still need a note of who is speaking on the matrix. It makes it very difficult at times. Please please please can you concider being able to manually input names so that teams viewing schedule can see when guests are speaking etc. This would also be helpful for people without emails - yes, they still exist!

Yes! I also need to create non-active "dummy" users to signify teens and other volunteers who don't have email access. But manual notes on the matrix would be a lifesaver.

My temp solution is to duplicate the schedule as notes attached to items in the service view. It doesn't show up in the matrix, but at least I still have a record of my schedule in planner.

Really needing this feature right now, it's so frustrating I can't add a manual name for information into the matrix.