I want to create a acf form where users can add their days off using the acf_form methode. For this form it is import that their filled in forms will be connected to a user-field. To prevent fraud this field needs to be filled in automatically and must not be available for the users. What is the best way to approach this challenge?
Do not include the field in the acf_form().
Create an acf/save_post action that sets the value of the field based on the user that is currently logged in.