After testing: Works well. But: How to setup, that only PERSON profile can create ORG profiles? Is this possible?
I played around and its easy to have a very funny org3 created by org2 created by org1... but may be that is only my misunderstanding of the targets of the organisation APP
Organisations are same as Persons - a type of profile. The Account is the one that creates wither Persons or Orgs. We observe lately that the Orgs naming makes it a bit misleading. Will have to reassess at some stage.
How to setup, that only PERSON profile can create ORG profiles? Is this possible?
You need to assign different memberships for Persons and Orgs modules, you can do it from Studio > Persons | Orgs > "Default member's level to assign after person's profile creation"
Then you can disallow for Orgs to create Orgs in membership settings.