Setting up Garmin autopilot

[captcandu]

Hello, I just replaced my linear drive unit, class B, I have an existing GHC 20 display, 4 years old. The drive replaced an older Autohelm drive unit. Garmin says I need to perform the dockside and sea trail wizards, but I can’t get into the Dealer Autopilot Config page. I’ve tried holding the middle button for 5 seconds in the system information page, but the unit just beeps. When I press the heading hold button, the boat turned in a circle, went on a zig zag course, but it kept going, because of course i don’t have the wizard page displayed. Any ideas?