Thanks, Craig. But I think you misunderstood my question. I was not referring to outer holes that are 90 degrees to the strap, which I knew are for the double screws, like on my skate.
I am referring to to the extra complete row of three holes that are only on the bottom section of the strap only, there being only a single row of three on top part of the strap. I will see if I can attach a picture.
[https://ibb.co/s1jZTDK](top three holes)
[https://ibb.co/qRb5Vct](bottom six holes)