Scheduling Change to Calendar Makes No Sense

I used to be able to go to schedular and make changes to specific types of meetings on particular days.  Example: On Mondays I have Tour Times and Planning sessions.  I used to be able to remove just sessions which is the meetings i handle. My partner does the tours. but now if i need to remove something it clears the entire day and no one can book anything at all.  The prior way was easier to micro control.  I was out of town a few days and we were unable to book the client tours ( my partner would have done)  would have been easy to just edit instead of remove everything and have to remake the tours selection only all over again. i don’t really have time to have to re-enter things all over again.