Is it mandatory to add all sons/daughters in huf?

Drona (Professional - IT) (71 Points)

13 March 2013  

If I form a new HUF, it is mandatory to add all my sons /daughters in my HUF? 

If only 1 son is living with me, can I form my HUF with him, his spouse and his children and my spouse as members with me as Karta?

Can I put initially Rs. 2 Lakhs as corpus for this HUF?