Thanks. But it doesn’t explain why it should be used for short periods only…
I played a little bit more with the room blocking and I think I now understood the difference with the declaration of non-reservable periods: only the room owner (and room booking admins) can define non-reservable periods whereas anybody can request a room to be blocked with the actual blocking effective after reservation by the room owner. Is it right?
That said, I find the blocking management a weak area in the room blocking. In particular, the blocking request is sent to the room owner but is not visible in the room details. It would be good to see it and allow a room booking admin to validate it if the room owner is not available, in case of emergency.
Along the same line, it would be good to see the blocked periods in the room details (in addition to the calendar, similarly to non-reservable periods) to allow the room owner or room booking admins to unblock it if necessary. Currently, if I’m right, only the person who did the blocking (not mentioned in the calendar view or in the room details) can cancel it.
I now understand better why it should not be used for long periods!