Remote set up for Sonos Playbar + Samsung TV + Virgin Media??

Hi, I have managed to programme my Virgin Media remote to control the Samsung TV power & volume. I've even managed to prevent the annoying "external speaker" pop up message! I've connected the new Playbar via Optical into the TV, but I cannot (via the SONOS app settings) get the Virgin Media remote to control the Playbar volume for the TV. (so far having to use the app) I HAVE connected the Samsung IR receiver to the TV, but it still does not want to control the Playbar volume. I believe the Virgin remote can only store 1 code at a time - does that mean I can only EITHER control the Samsung TV power/volume OR the Playbar volume with that remote, not both? Any and all advice welcome! Thank you