To be able to create or update any plan (and its Office 365 Group accordingly) within Planner, the account requires access to all plans and their groups, even to the ‘Private’ ones. Only the Global Admin account has such privilege. Integration Hub does not request, process, or store the account credentials. The ‘OAuth’ authentication type is used, where Integration Hub is authorized to access your resources without sharing credentials. The access token is issued to our app by an authorization server, with the approval from your side. Integration Hub then uses the access token to access your Planner or Project Online data.