Darren,
Bad news on two fronts. Yes - you will have to fill in the offsets. These you will have to measure on your own equipment....they will not be the same for everyone's set-up. Look through the information that you have in the help files (or online).....you will need to get to understand what exactly the offsets mean....then you will know what exactly to measure.
However, doing that will not make the dome follow the scope.....that will just improve things when you get it following. There is some other reason for the dome not moving when the scope moves (I think). Perhaps you are not actually starting a sequence....just testing. In that case you need to have "Slave to Telescope" box checked in the "Control Panel / Other" window.