How to add more options in Employee Promotion / Employee Transfer via Custom Script?

Hi community, is there a way to add more options in ‘Select Property’ field in both Employee Promotion and Employee Transfer via Custom Script (or any other front end customization method)?

Hi … did you find a solution to this? I am also looking to add options of certain custom docs / fields created within HR / Employee but can’t seem to add these to the promotion drop down … the field in customization / edit doctype are only data whereas this is actually a select field. Can’t trace where to change / add to this field.