Currently in Aurena (23R1) we can condition fields in page desginer as shown in
Index - Technical Documentation For IFS Cloud

Is there to condition a field based on the connected user?
for exemple : using fnd_session_api.get_fnd_user()
like putting api.get_fnd_user() = ‘XXX’ in the visible option of a field

or is there a way to find where the api.tFunction] are stored?
Condition Syntax - Technical Documentation For IFS Cloud

Kind regards