First of all, we can develop a two station tooling, one can place products on the other station when testing, which can improve efficiency.
But we can't realize multi-channel test for an instrument. If an instrument wants to realize multi-channel test, it will cause the leakage standard to be difficult to formulate. Even if the leakage value standard is formulated, it can't judge which way caused the leakage. This is not very advocated in the market leak testing practices, advocating one-to-one testing.
If you want to realize the multi-channel test, you can add a test system and customize it to realize the multi-channel test.