Hi fargo,
I am not a Mac user but can tell you how it works on a PC. First you need to install two commands, 'move turntable' and 'input table' next in surveyor name your turntable, I use a depot name such as 'Vancouver Turntable' Check how many stops your turntable has, this is best done by looking in the config file and counting the number of angles given, say it has 12 stops. Then program the input table as follows :-
turntable,Vancouver Turntable,12 NOTE the first word must be all lowercase, the turntable name must be typed exactly as the name is i.e. if you have upper case in the turntable name use the uppercase letters in the input table then the last entry the number of stops 12.
Use the commas between each entry and no spaces.
In surveyor place a trackmark near the entrance to the turntable, name it say 'VC Turntable Approach' and give it a radius of about 1 metre.
Place another trackmark at the opposite side of the turntable and name it 'VC Turntable' give this one a radius of app 6 metres, this will depend on the length of the loco you are turning.
In driver your commands will be :- navigate to trackmark 'VC turntable Approach' 'stop train' 'wait for 5 seconds' 'navigate to trackmark VC Turntable' 'Stop Train' 'wait for 5 seconds' 'move turntable' select VC Turntable to stop xx.
If you can't get this to work drop me a PM and I will try to sort it out.
Cheers,
Bill69