Intention

Q: For Sunnah Salaah does one have to make it with the niyyah of the Fardh Salah one is praying it for? E.g making niyyah that I am performing 2 Sunnah of Zuhr?

Q: We are Hanafi. If I am leading the salaah at home, and my wife wants to read salaah behind me. What intention should I make? E.g. during ramadhaan, I read Esha, Taraweeh and Witr. Do I need to make an intention for each two rakaats that she is behind, or can I make an intention once for Esha and let it count for all. How must the intention be made? Verbally, in the mind, or just a realisation that she is behind me?

Q: Is one allowed to change one's niyyat of Salaah (during salaah) from Fardh to Qadhaa?

Q: Should I make niyyah for leading jamaat, if I pray together with a non-baligh child of 6 or 7 years?

Q: What is the ruling regarding making niyaat for women not in the saff?