Really two options:
Remove the subject for the room for all meeting requests:
Set-CalendarProcessing -Identity <room> -Deletesubject $true
Set-MailboxFolderPermission -Identity firstname.lastname@example.org:\Calendar -default -AccessRights AvailabilityOnly
Hi @בלה מיכאילוב - מחשוב ומערכות מידע - מנמר ,
Is there any update on this thread? If the issue has been resolved, please mark the helpful replies as answers, this will make answer searching in the forum easier and be beneficial to other community members as well. Thanks for your understanding.