Question about barrel dimpling

When getting a barrel dimpled for use with a Vltor low profile gas block (with set screws) is the barrel only dimpled one time?

There should be two dimples.

-RD62

2 is obviously better but Ive seen only one many times.

I only dimple one screw and then Rocksett that one. The other one is red-loctited.

Just wanted to make sure one dimple would be fine, didn’t feel like sending it back for another (unless it was necessary). Thanks.