You may wish to create weighted average projections if you have multiple projection sources that you'd like to aggregate. Alternatively, you may want to weight the floor (cash games) and ceiling (gpp games) stats with the Daily Fantasy Nerd projections.
After uploading the projections which you wish to incorporate in your weighted average, return to the "Projections" tab. Adjust the value below the display name of your projections to change how the resulting projections are weighted. Make sure that the values add up to 1.00. When you're done, click on "Apply Weights to Proj" and return to the "Optimizer" tab.