Our area officer indicated that is what he wanted, while we're stuck with him I'll do it how he wants. The guidelines are a minimum (his words)

We have an old guy testing, who only does class 4, the question was asked why I hadn't qc'd him on class 7, even though he hadn't done any for 12 months.

We have 5 testers, 3 class 4+7, 1 class 4,5+7, and me (the qc).

I think it may be added to because its two separate lanes, different equipment and layout.