I can’t say if this is something the developer would add or not, you’d need to talk to him.
But you can accomplish this by following this https://www.advancedcustomfields.com/resources/adding-custom-settings-fields/ and then use an acf/prepare_field filter to display or not display the field base of the value of the new setting https://www.advancedcustomfields.com/resources/acf-prepare_field/
