The following link provides the information for setting up resources in Outlook with Exchange:

https://support.office.com/en-us/article/use-the-scheduling-assistant-and-room-finder-for-meetings-in-outlook-2e00ac07-cef1-47c8-9b99-77372434d3fa

https://docs.microsoft.com/en-us/office365/admin/manage/room-and-equipment-mailboxes?view=o365-worldwide