Sometimes you may want to have the Delivery Method on a Prospectus Request form hidden, but still have the address fields be present. Perhaps you only have downloadable prospectuses, but still want students to fill out a postcode; or you only offer physical prospectuses which need an address, but don't want to show the radio button.
In these cases, you need to set a condition on the address block to show when your Delivery Method is a hidden value.
In the example below, the hidden Delivery Method is set to "Both", so this is the condition that you'd place on the Address Block.
If using "Postal" for Delivery Method, you'd use "P", and for "Download" you'd use "D".