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Looking at your file your toolpathed pocket is actually 0.942in deep so using the 3D toolpath it will go all the way to the bottom of the pocket, see the image below, I selected the top face of the Model for the "Top Height" , next I selected top of the Model again for the "Bottom Height" but this time with an offset of -0.8in so the toolpath will only go to that depth, this means that it is not going to the bottom of the pocket in your Model, if that is all you want then use the "Heights" tab to move things up and down as required.
As for the number of passes, this is controlled in your toolpath by the "Maximum Roughing Stepdown" setting, this defaults to a value of 0.04in, if you want fewer stepdowns (Passes) then try changing the 0.04in to say 0.1in so you will be machining a depth of cut of 0.1in instaed of the 0.04in. You can find this under the "Passes" tab.
File attached
Fusion