You need to have sufficient rights to create a user and assign the proper permissions and roles.
Databeat Doorsign will be tested for Office 365, Microsoft Exchange 2013, 2016 & 2019. Older Microsoft Exchange versions may work but is not supported. If using Microsoft Exchange 2013 or newer, see the article for Microsoft Exchange for instructions. Support for Doorsign use with Google Calendar in G-Suite is aldo implemented.
You need to
Create a New Role Group within admin roles with Application Impersonation and Mail Recipients role
Give Created Role Group access to user
Give Resources (Rooms and Equipment) Full access to user
When done, the created Doorsign user will allow Databeat Doorsign to book, retrieve and display calendar information from your Office 365 users, rooms and equipment. We strongly recommend naming this user Databeat Doorsign (But it is not a requirement). You will need to set access permission to each resource (!) to be used with Databeat Doorsign.