New family member

Thanks for all of your kind responses, Izzy seems to be fitting in with the two older dogs very well. Charlie, the elder male at 8 1/2 years has always been very easy going and tolerant of puppies, though he is less inclined to be as playful as he once was, has been really good, only giving a low growl on couple of occasions to warn Izzy that he was pushing the limits.
Olive is our 3 year old female and she has taken to him quite well so far, playing with him and letting him be a little aggressive with her, but not letting him go too far. He slept well last night, and only once peed in the house, our fault for not letting him out before bed.20220624_193536.jpg
Olive on the left, Charlie on the far right.