My experience with non-overlapping has never been very satisfying, but, in limited testing, the following seems to work:
File>Page Setup>Layout and Routing --
1. Set Separate to all lines
2. Set Overlap to no lines.
In the shapesheet for the page, you can confirm in the Page Layout section:
1. LineAdjustFrom =1
2. LineAdjustTo = 2
See attached, based upon Yacine's file.
Hopefully, my test results were not a "fluke"!
Wapperdude