Photo editing to add or remove persons in a photo

"I came across your website and your service sounds like a Godsend, I hope you can help. I would like a photo edited, have attached it. I am basically doing a tribute slideshow to my mum.

 

Would like to remove:-
~ The lady in the blue jacket with sunglasses between the other two women.
~ The girl second from left in the silver dress with brown belt and bare arms.
~ The male head at the back, third from left in partially visible black shirt, closest to the girl in the silver dress.

 

If it makes it easier, can happily push the remaining group of people together afterwards?"