You're welcome! Actually, I didn't address your question about how commands are allocated. Essentially, it is a seniority system. However, you must have 6000 hours to be considered for a command, which may be reduced to a minimum of 5000 hours subject to your length of employment with Virgin. There is then a period of assessment of suitability for command, prior to actual command training. So it's a mix of merit and seniority, if you like.
Scroggs