[joelr]

Hi! For the moment, OmniPlan schedules tasks according to the availability of any of the resources involved.

We are aware that this could be better (to be able to say "ALL of these resources"), and I have filed your post as a feature request. We would need to figure out the best way to offer this option in the UI, tweak a couple of things and test it.

We would love to hear your ideas about what you would like the setup process to look like. In the mean time, you may need to add some constraints to the affected task(s) to make them happen at the right time.