I believe these are the ones that we use:
Not sure if that's the same website Dave got them from or not.
1) If it were Warmachine it would be 75 minutes each in that case. This would include deployment, but you can unpack models off the clock between rounds and have them on the table outside of the deployment zone.
2) In Warmachine, the official rule is, basically, that if someone needs to resolve a roll it's done on their clock. Personally, if the opponent is just rolling quick tough checks (5+ save) I will keep it on my clock. If someone is making a free strike (Opportunity Attack) where they need a few seconds to look at/calculate their odds of hitting and then rolling damage and seeing how much damage they do ect... I'll flip it. So I would say in terms of 40k I would definitely swap it to the roller while they are rolling their Overwatch shots or making their CC attack/wound rolls.