Body
When scheduling a meeting in Microsoft Outlook 2016, a best practice for reserving a conference room is to invite it as a resource. This knowledge article demonstrates how to find and reserve a conference room for a meeting.
Step 1
From your Calendar, click New Meeting on the Home ribbon.

Step 2
Click Scheduling Assistant on the Ribbon.

Step 3
Click the Show a room list: drop-down and choose All_Conference_Rooms.

The All_Conference_Room list displays.

Step 4
Choose an available conference room by selecting the check box.

Note: Some conference rooms will automatically accept the meeting request. However, some will tentatively accept pending approval.