If there are questions on the stand-up organize for them another meeting or make a note and get back onto it later. The original stand up should only be a place

If there are questions on the stand-up organize for them another meeting or make a note and get back onto it later. The original stand up should only be a place where you can flag that you cannot meet your deadlines or you have problems. If it has to be discussed another meeting has to be organized only with those people who are related to that problems. Others should go back to their tasks after the stand-up. I know also it is not easy to do this but when this works you start to love to go to standups.