I asked how this would be done in another thread and no one had the answer. Well last night I took the plunge and figured it out. I thought since no one else knew how I would share this info with others on the forum that may be looking at doing the same. 1. First thing you want to do is use a towel folder over twice, or something dense, to cover the IR eye [Not the blue eye] on the HR20 that you are leaving at the default setting. [I'll refer to this from now on as HR20-1]. 2. Put the slider of your remote on AV1 or AV2, your preference, and hold “Select” and “Mute” down until the AV1 [or AV2] light flashes twice. Enter the code 00003 [None of the others seem to work for this]. 3. Slide the slider back to “DirecTV” on the remote and go into the Remote Setup menu for HR20-2 [The one you want to be AV1 or AV2] and choose “Receiver Mode” 4. On the next screen after choosing “Receiver Mode” select “AV1 or AV2” from the dropdown in the middle of the screen. [Default is “DirecTV”] 5. Slide the slider over to AV1 or AV2 [Depending on what you chose in step 2] and press select on “Done”. 6. Remove the covering you have over the IR eye HR20-1. 7. Bingo! That’s it. HR20-1 is now “DirecTV” on your slider and HR20-2 is now AV1 or AV2 [Depending on what you chose in step 2]. ***Harmony Remote Users*** I then used my remote in AV1 mode to program my 880 button by button. I gave it a device name of “HR20-700S3” and as soon as I can figure out how to submit that “model” to Harmony/Logitech I will do so and anyone else can use that “model” for their second HR20 and it will be already programmed for you.