Entry express creates a running order after the entries close. So, each dog is given a specific number. They normally try and run in that order but it's not always possible because a pro can't run back to back because their dog has to honor the next dog (in MH). So, there is someone designated as a Marshall and she/he works with the handlers and manipulates the running order to make it all work smoothly. However, if you have more than one dog entered, for instance a pro might have 7 dogs entered, I think it is a "rule" that the pro needs to run those dogs in the order provided by Entry Express. So, if a pro had 7 dogs running and his/her dog #'s were 5,9,15,28,30, 38, 41....they would need to run them in that order. So, in other words, they couldn't run 28...then 5...then 30...etc. I am not a rule expert (far from actually) so I could be wrong, but it came up last weekend and the judges made the pro run his 7 dogs in order per the "rules." Maybe some judges are less concerned about a handler running their dogs in the order given. But, in your case, it's a bit simpler, you will have one dog in a JH test and your dog will have a number. The marshall will probably try and run in the order of the catalog if possible but sometimes it's just not possible. So, just check in with the marshall when you get there and they will let you know when you will be running.