dependants of settled person of 10 year LR route

Hi
my scenario is as below..
1,I arrived in UK on feb 2005 as a student.
2,Spouce arrived in UK as a dependant in 2006,
3,Child born in india Jan 2008,
4, We all get Post study work visa in 9 October 2008 valid till 9 oct 2010 ,
5,We all 3 members get Tier 1 general visa(PBS) on 15 june 2010 to 15 june 2012,
6,My second baby born in Feb 2012
7,We all 4 member Get 2 nd extension (PBS Tier 1)on July 2012 valid till July 2015.
8,My 10 year completed on 11 feb 2015 so on 10 year LONG RESIDENCY i get my settlement.
9,My child who was born i UK i 2012 applied for citizenship and will get passport around 15 June 2015.
My question is that

1,What form i should complete for my 1 st child who was born out of UK and my spouse ??????
2,Can i use SET O FPRM OR different.
3,How thay can be settled ASAP????
4,PLEASE PLEASE PLEASE HELP AS ALL INFORMATION WHICH I AM GETTING IS NOT CLEAR...

You would have been so much better applying for ILR via the Tier 1, 5 year route as then your family will have been able to apply with you.

If their visas expire in July, you have no option other than to apply on FLR(M).