There are other possible configurations options, but this may be the easiest way to get there:
https://cdn.eventideaudio.com/manuals/h90/1.9.7/content/setup/wet-dry.html
Just below [3.4.1], you’ll see how the Insert is tapped before either of the H90 effects. Input 1 feeds everything. Out 3 is used as a send for “without” (no return needed to In 3). Out 1 will be your “with”.
