In the documentation for managing organization detail fields, the first step is to turn on Customer and organisation profiles from the project settings/features page. Our features page only includes Board, Calendar, Alerts, On-call & Feature Lab.
We would like to add some extra fields for internal organisation ID and parent/tenant ID, but this isn't possible without customer and organisation profiles. Currently we can only edit the organisation name and manage email domains via the Customers page. We have 72 customers in the project currently.