We need a System RF Path Block Diagram. We need to know where your transmitters transmit to, and where your receivers receive from and VERY simply how they are interconnected. This diagram is required for all but one type of application. If the application is for a simple repeater only, with NO links, NO remotes, NO voting receivers, etc, the diagram is NOT needed. The explanations for the various descriptive data items are listed in the box at the bottom of the application form.
Some additional information is provided here.
An Open system may have a closed autopatch. Listed Open systems will have their actual site name published, along with other relevant data.