I am curious as to why we are talking about PADI when the shop is SSI.
It was maybe a decade ago that I dived with an SSI operation in Mexico, and I had a long talk with the shop owner during a boat ride to the dive site. He was taking a student out for his last dives before being certified as an instructor. Yes, the dive shop owner had done all the instruction of the student, and he was now certifying him as an instructor. No one else was involved.
He was very upset about the fact that SSI was changing the rules and would in the future require instructors to be tested by an agency representative. He liked things the way they were, and he pointed to the student as an example. He said the student wanted to be an instructor at a tropical resort, so as his instructor, he could focus instruction on that goal. That meant he could skip everything in the course content that did not matter for an instructor at a tropical resort. That is what he had done, thereby saving a whole lot of time and effort in the process. Now he was going to have to teach the whole damned course.
So that has all apparently changed, and SSI instructors must now be evaluated by someone from the agency, not the person who trained them.
And, for the purposes of what people seem to find confusing in this thread, it should be pointed out that SSI instructors are not evaluated by PADI. PADI has nothjing to do with it.