Luckily my dog will look at me 1st if someone else tells her to do something to see if she actually has to do it. If I say nothing she ignores them if I repeat the command she will do it.
If I am not there she does as my Dad says. He is a bit softer with her than I am but, he thinks I don't know. He will not tolorate the same things as me so I guess I am lucky.