Duane wrote:

https://www.ilovebicycling.com/fore-...ddle-position/

This seems straightforward:

The Knee Over Pedal Spindle Method

The generally accepted way to find the
proper saddle position is called knee over
pedal spindle (KOPS). To find KOPS sit on
the bike with the pedals at the 3 o’clock
and 9 o’clock position.Â*Hold a plumb bob at
the front of your forward kneecap and see
where it hits in relation to the pedal
spindle. The line should intersect the
pedal spindle/axel. If it falls in front,
adjust the saddle rearward. If it falls
behind, adjust the saddle forward.

--
underground experts united
http://user.it.uu.se/~embe8573