When you have a troop with booty/meta-chemistry when during the deployment phase do you make the actual roll? A) as soon as they are placed on the table. (meaning you would know what they have before you finished deploying the rest of your models) B) at the end of deployment after all models have been placed. C) after all models have been placed during that round of deployment. (for example if you deployed first you would roll after all your models have been placed but before your opponent started deploying, or reserve models were placed) D) something else. Similarly, when would you roll for you infiltration so see if they succeeded? For example say you have 3 infiltrators and you really want one to infiltrate onto you opponents side but don't really need more than 1 to succeed. A) Can you roll for them 1 at a time and choose if you want to keep infiltrating models based on the results of the previous roll? B) or do you have to place all 3 of them at the same time and make all the rolls at once.
And for Infiltration you do it one-by-one, after placing the trooper (or nominating their deployment spot for Hidden Deployment).