cant hide categories in selected timeslot and date

I am a pro user, and I want to hide some categories during selected timeslots on a special date. However, when I attempt to hide Category A on 2023-12-14 during the 12:00 – 13:00 timeslot, the system hides this timeslot for all categories, not just the selected category I chose. It appears that the ‘Hide This Timeslot At’ function and the ‘Hide This Timeslot For Categories’ function cannot work simultaneously.

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