To book a room via outlook or the 365 app, open Outlook from your computer or sign in to Outlook on the web. Schedule a new meeting and add the room or equipment to the meeting like you would when inviting other employees or customers. You've now reserved it.

1.    Open Outlook on your computer.

2.    On the Home tab, choose New Items > Meeting.
To schedule a meeting, on the Home tab, in the New group, choose New Items, and then Meeting.

 

3.    Or, from your Calendar, just select New Meeting.

4.    In the To field, type the name of the room you want to reserve, in addition to any attendees you'd like to invite.
Or, select To then double-click the conference room or equipment from the list. Then select OK.
Reserve room mailbox in Outlook

5.    In the Subject line, type the purpose of the reservation or meeting.

6.    Change the Location or leave as is.

7.    Change the Start time and End time. Or, select All day event. To make the meeting or reservation repeat, select Recurrence at the top.
Reserve meeting time

8.    Type a message describing the purpose and attach any files if needed.

9.    To make sure the room and people you've invited are available, select Scheduling Assistant at the top. Then select an available time in the calendar.
Check if room equipment available

10. When finished, select Send.