You just:
1) Click on the line 12 input box
2) A popup-up window will open with two columns for input.
3) Each row represents one house where you have installed a charger
4) In the first column enter the address where the charger was installed and in the 2nd column enter $1,000
5) Click OK or Close or Save (I forget what the exit notation is) and that pop-will close
6.) The sum of the amounts you specified in column2 will now appear in form 8911 line 12
