(UTC times)
First of all, have a look at the FAQ (Frequently Asked Questions) section to see if your query is answered there. If not then browse the User Manuals / Wiki area which contains many details of how to use the simulations. Perhaps your question has been asked on the Forum? These are the fastest ways to get answers.
A list of "who does what" can be found here
Finally, if all else fails, then please use the Administration Contact page to get in touch with one of us. Please note that we cannot answer general simulation or timetable questions as these are far better discussed on the forum where you are likely to get a much quicker answer anyway. Using this method will take a few days to get a reply so please be patient.