There are some doubts regarding appendix S.

Statement in appendix S
1st : The test pressure is usually 11⁄2 times the design pressure, and on this basis it may be thought that 50% extra bolt stress above the design value will be sufficient.

My doubt : based on above statement we may provide 50% more bolt area than what is minimum required. is it correct?
and
if i click the option in PVELite for hydrotest allowable stress = 90% of yield stress at ambient temperature I am setting bolt allowable stress = 90% yield. is it correct?