I am not able to add a location (eROOM) for my planned meeting

To add a location or conference room (eROOM) to a planned meeting in Outlook on the web or Outlook.com, use the Location field and Room Finder/room lists, depending on how the organization is configured.

1. Open the calendar and create or edit the meeting.
2. In the meeting form, select the Location field.
3. If the organization uses Room Finder and room mailboxes:
   • Select Room Finder or Browse Conference Rooms (wording can vary by client).
   • Browse or search for the appropriate building/room list, then choose the eROOM from the list of available rooms.
   • The room will be added as the meeting location and as an attendee/resource.
4. If the eROOM is not a conference room resource or does not appear in Room Finder:
   • Type the eROOM name or address directly into the Location field.
5. Save and send the meeting so the room booking is processed.

If no rooms or room lists appear when trying to add a room, this usually means no room lists are configured in the organization. In that case, an Exchange or Microsoft 365 administrator must create room mailboxes and room lists before they can be selected in Room Finder.

If Outlook on the web shows an error such as “The room lists weren't found. Please try again.” when selecting Add room, the Exchange server may require an update. In that case, an Exchange administrator should install the required cumulative update for Exchange Server 2016 or 2019 so room lists can be found and used when scheduling meetings.

References:

• How do I add a location to an event?
• Use the Scheduling Assistant and Room Finder for meetings in Outlook
• Show a Room list option isn't displayed in the Room Finder pane in Outlook
• No room lists found when trying to add a room in OWA in Exchange Server 2019 or 2016 (KB5006992)