No, if you set the values in the wizard as Imperial then you need to enter all of them as imperial units.
1 3/8" is entered 1.375 inch
If you work in metric then you will have to enter all values in metric, so if the dia you want is 1 3/8" then you would enter 34.925 as that is the metric size for 1 3/8 dia ie 1.375 x 25.4 = 34.925mm
If you want to move X 1 inch and your machine or code is set to metric units then you would call a move of 25.4mm
If your machine or code is set as Imperial units (inch) then it would be 1
Hood