How do I merge codes? Jose Gamez - December 17, 2015 20:02 1. Enter Editing mode for the code tree by clicking the 'Edit Codes' button. This will turn the Codes panel orange. 2. Float your mouse over one of the codes you wish to merge. Then click the 'Edit Code' button that pops up on the right side of the code. 3. Click the 'Merge' button on the bottom left of the Edit Code pop up. 4. Choose the Primary and Secondary Codes The primary code is the one you want to keep.