scan feature (when using scan feature) should also has "relative to" option like point/plan/circle

user can use "relative to" option on scan feature to get reference location before touching off on real feature like point/plan/circle feature. "relative to" option is very useful on point/plan/circle feature. when I dealing with scan, it is very hard to touch correctly because variation on real part. I would love to use "relative to" on scan when it is available.