1) Select your fact 2) Select the citation you want to add info to. 3) Click on the "copy" icon in the button bar (2nd fr left - looks a piece of paper) 4) Delete that citation. 5) In the button bar, click on the down arrow - then Paste Duplicate. 6) Open that dialog screen up - you should notice that in the upper right it says attached to 1 fact. 7) Make your change, click ok.