If you are wanting to manage read/write/editor permissions to the resource calendar, go to Office 365 (Outlook on the web | Outlook for Windows/Mac) - Manage Permissions to a Resource Calendar. This document provides instructions on how to manage invitation permissions for a resource account.
Users must be granted permissions to interact with a resource account. Resources contain special options for scheduling and permissions that are not available in user/service accounts. meeting/conference rooms, audio-visual equipment, project, or vacation calendars.
A resource is an Office 365 account typically used for non-person related calendars, e.g.
