When using the calendar view and adding a restriction, after saving, you are automatically redirected to the list of restrictions, which means leaving the calendar view. Therefore, after each addition, you need to go back to the calendar and reapply the filters to display the desired dates.

I considered the solution of opening two windows—one to keep the calendar view open and the other to create restrictions. However, this does not solve the problem: when a restriction is created in one window, the other window needs to be refreshed to display it, and this refresh resets the filters and returns the view to today’s date.

Two solutions could be implemented. First, modify the behavior so that after creating a restriction, you are no longer redirected to the list, but instead returned to the last view used.
If working with two windows is preferred, the date selection in the calendar view should be preserved when the page is refreshed.