Jamaat Salaah and Imaamat

Q: At home if my mum, wife and daughters make Jamaat, is there anything wrong? 

Q: Can a person making ruku and sajda follow an Imam making salah with signs in a nafl salah?

Q: Will my salaah be valid behind an Imaam who makes masah over ordinary, cotton socks?

Q: A masbooq makes both salaams with the Imaam and then realizes that he is a masbooq. How should he complete his salaah?

Q: One person said: "as praying in congregation is a strong sunnah, and although its intentionally abandoning is makruh tahrimi , the ulama said its repeating is sunnah." Does this mean if some does pray at home intentionally then it is sunnah for him to repeat the same salaah after he has prayed?

Q: While performing esha salaat the imam performed 2 rakaats and made the first salaam one member of the jammat corrected him by saying subhanallah loudly. The Imam continued and made the second salaam completing the Esha salaat.The Imam got up and performed other salaat. The Imam is not a musaffir. What should the rest of the jamaat do?

Q: If a hanafi Imaam recites an Aayat of sajdah (that is according to Imam shaafi'ee Rahimahullah and not according to Imam Abu Hanifah Rahimahullah e.g: The Aayat of sajdah that appears at the end of the 17th juz) in salaah, and he is followed by muqtadis of the different mazhaahib, then what should he do in this situation. If he doesn't make sajdah will their salaah be valid? Is there a solution to this?

Q: How must the saffs of women be if the room is small? Can men muqtadis (more than one) read 1 foot behind the Imaam on right and ladies one saff behind?

Q: I live 10 minutes from a mosque and because of this distance I spend almost 2 hours every day walking to and from the mosque to the five daily prayers.  I am I student and need as much time as possible for my studies. Would it be permissable for me, in order to save time, to attend only Fajr and Isha in the mosque (because of the big virtue of praying these prayers in the mosque) and pray the rest of the prayers alone at home?

Q: How should a woman perform salaah in jama'ah, if I perform behind my father (if we are on safar)? How do I make niyyah and what do I read in qiyaam, jalsah, qaumah etc. following the hanafi math'hab?