I'm building a form that shows two fields depending on organisation of the logged in user or user selected.

Showing the fields for the user selected is easy, but showing the fields for the logged in user does't work.

The scenario I have is as follows:
Order hardware for new or existing users.
If existing, check the user's organisation and show hidden fields if organisation = X.
If new, check the logged in user's organisation and if organisation = X, show fields.