The ‘set sprockets’ screen on webcontrol is significantly better than groundcontrol (where you have to go multiple places to set the sprockets and set the chain length) but it’s got a lot of stuff on it that isn’t absolutly needed and is confusing to new users.
I think the screen should be simplified to the sprocket setttings, the manually set chain length button (and I would rename that to something like 'marked links are at 12 o’clock) and the close button. I would add text explaining how to do the reset.
I’m not sure what automatic does
set zero doesn’t do anything useful, after the machine is built, you are pretty much never going to have the loose end of the chain to put at zero
extending the chains isn’t really useful,