Hey BLM!
OK, I'll give it a try:
The podiums are held in early February and mid July by Hermes in Paris, and the staff (select staff, usually the manager and another staff member) go to Paris (all of them, worldwide) to be presented with the new colours of the coming seasons, and colours that may have been reintroduced, new and re-issued leathers, discontinued colours etc so they can place their store orders for the coming season. Select clients are able to place a "Special Order" with their store on occasion, to order the exact specifications they would like. For example, I have ordered a 35cm Birkin in chocolate togo, with orange chevre lining, and contrast orange top stitiching, palladium hardware, and my darling Manager will be placing this order for me in a few weeks, when he visits the Podium.
I would pay big bucks to be a fly on the wall at the Podiums, it sound incredible!
Just to clarify also, Hermes has been known to discontinue colours, re-introduce colours, re-issue leathers...etc. so it is not always possible to have your SO fulfilled. Some ladies and Gents can wait YEARS for their perfect order to be made...but it's SO worth it in the end!!!!
Hope that helps?