Crestron’s DigitalMedia Configuration Tool allows AV integrators to choose the modular input and output cards for Crestron’s DM switchers. There are two options for this online tool: the “Full Switcher-Wizard Version” recommended for users who are unsure of which cards, room boxes and other hardware will be needed for the job; the “Full Switcher-Professional Version” is designed for DMC-D certified professionals who know what hardware is needed for a system. Simply drag and drop cards into a chassis as well as specify options and additional components needed for your system. Once finished, download a bill of materials. This tool also specifies the appropriate amount of cabling depending on video signal types and distances.
https://www.crestron.com/resources/dm-switchers-configurator- configuration