1. Set up an alternate element with $11.0 address, and choose “on” for the InterLock State of the Details setting in the DOPSoft. 2. Set up 3 “On” button elements with $10.0, $10.1 and $11.0 addresses respectively. 3. Set up the Invisible Address of the 3 “On” button elements as $11.0 in the Details setting.