In Multi-Calendar view, users can currently view all properties at once or filter down to a single property.
It would be much more useful to allow users to select multiple specific properties at the same time when filtering the calendar view.
This would make it much easier to:
Compare availability across a selected group of properties
Manage similar or related listings side by side
Reduce noise when users only need to focus on part of their portfolio
Being able to filter by multiple selected properties (instead of just one or all) would make the Multi-Calendar much more flexible and efficient for day-to-day scheduling.