Carol,
I would put it in first with the liquids. Here is how I make bread, it might help with the "measuring" aspect:
about 1 1/2 cups water
1 egg
a splash of canola oil
approx 2 cups of fresh ground whole wheat flour
about 2 heaping tablespoons wheat gluten
approx 1/2 tablespoon sugar
a long dash salt
approx 2/3 tablespoon yeast
a scoop more flour
Turn the machine on and let it mix a couple of minutes, it should be like thick batter, then I add more flour by sight 'till I get the right consistancy. Test with a finger for moisture content, you want "not sticky or overly moist but not dry". Scrape the side of the bread machine with a soft spatula if necessary.
I don't really measure anything precisely, and I do vary the ingredients also from time to time. Too much sugar or yeast can over proof it and cause it to fall, so skimp a bit on those at first. After a few loves you should have a feel for how much to add. I don't have a Sam's Club membership either, I send a fixed grocery list with my Mom. Good luck!