Welcome to the community, @Mikko_Gaertner! :grinning_face_with_big_eyes: Unfortunately, an Airtable field can be either manually edited or automatically generated, but not both. To do what you want, you’d need to use some helper tool—a script in the Scripting block, or an integration service like Zapier or Integromat—to insert the record’s created time into a normal date field, which can then be edited as you wish.
