Performing nafil Salaah in jamaat

Q: During Ramdhaan in the Haramain both at Makkah and Madinah they conduct Tahajjud namaaz in Jamaath during the last 10 days from 1 am to 2.30 am. Following this now a days the same method is being followed in mosques in our country (India) as well and also women participate in this congregation but of course in a enclosure segregated for women. Also now a days women attend Jummah namaaz in mosques on a regular basis. Please give your expert option on these two issues.

Joining Salaahs

Q: I traveled from Cape Town to KZN for work for approximately 10 days. My work requires much travel to far flung places like Durban, Harrismith, Van Reenen and Vryheid. Based on the locations of the work areas, can I combine my salaah for my entire stay in KZN or should I make salaah separately after three days?