Performing two Jumuah Salaahs in one Musjid

Q: Due to employment or education, people may not be given permission and/or will not be able to perform Jum'ah Salah at the standard Jamat time in the Masjid. Hence, in summer, a later Jum'at takes place (late afternoon) in the same Masjid so that people do no not miss Jum'ah altogether? 

(a) Is it permissible to organise a second Jum'ah Jamat in the same Masjid where one Jum'ah Salaah has already taken place?

(b) If not, please explain why?

(c) If this is not permissible, are there any alternative solutions or should one ensure that, come what may, they attend the Jum'ah Salah which takes place at the standard time?

Witr Salaah in the Harams

Q: I am a follower of the Hanafi Mazhab. At the Haramain the Witr prayer during Ramadaan is conducted in Jamaah. At times they pray as 2 + 1 rakaats and sometimes as 3 rakaats. Also they raise their hands during Dua-e-Qunoot which during the night of Shab e Qadr and the night of Quran Khatam which is on 29th night of Ramadhan the Dua e Qunoot goes on for approximately half an hour.

Please advise in the circumstances narrated above:

(1)What type of Niyat should I make for Witr namaaz not being sure whether it is going to be 2 + 1 or 3 rakaats together?

(2) should I also raise the hands during Dua e Qunoot which we normally do not do in Hanafi Mazhab.

In the huge gathering it is practically difficult to move away and not participate in the Witr.

Wearing a taweez

Q: Is it permissible to keep amulets (Taweez). An Imaam gave it to us as we have nazar and other problems. Please let me know if it is a sin to keep amulets which have Quraanic Aayaat?