If a handpour is first in the Product List, will the other products hold back until the handpour is complete?

If a handpour is first in the Product List, will the other products hold back until the handpour is complete?

By default, Mixmate runs as many products as it can at the same time to complete the desired Mix efficiently. The goal here is to be injecting the products into the main stream of carrier on the way to the destination tank.