Site collections and sites are mapped with their access rights to One Identity Manager. You cannot edit their properties in One Identity Manager. You can edit access rights managed within a site collection in One Identity Manager. To do this, SharePoint Online roles, groups, and user accounts are loaded into the One Identity Manager database.
A site collection groups child sites together. User account and their access permissions are managed on the sites. To automatically assign used accounts and identities, assign an account definition to the site collection.