I created a customized form called Onboarding Demo that is based on a list called "Demo List 1". In Demo List 1, I have numerous columns like: Position Title, City, and Supervisor. Both the Position Title and City columns are Text. The Supervisor column is a Person record -- drawing from Office365Users.
What I would like to have happen in the Onboarding Demo form is based on the Position Title (ex: Waitress) and the City (ex: Denver), the supervisor's name and record will auto populate. The list, 'Demo List 1', has all of this information tied to each position and entry. It is important for the supervisor's record to be tied to the form as eventually I plan to set up power automate to send emails directly to the supervisor.
In your answers, please specify what area you are editing in (i.e. Update, Default, OnChange, etc).