I have explored the existing threads related to dependants applying ILR separately but not able to find answers for all my questions. Apologies if I repeated any questions which was already answered in the forum.
My wife has got British Passport about 2 years back. I and our 2 children were applied for PBS dependant’s extension about a month back and completed biometrics last week.
I & children are getting eligibility for ILR in about a week and we are in the process of varying our PBS extension application to ILR.
While filling the SET(O) form, getting confused in many sections

Payment Details:
As per my understanding, since we already paid fees for PBS extension which is in excess of ILR fees no need to fill the payment details.
Do I need to tick main applicant+ 2 dependants £ 6891 box under item 5 of payment details page?
Section 1: Applicant Details
Do I need to mention my details here or the main applicant (my wife) details?
Section 2: Dependants who are also applying
a. Is it OK to enter the details of my 2 children (under 16) in this section or do we need to fill separate applications for each dependant?
b. Partner details from 2.1-2.7 Do I need to fill my wife’s details in these sections?
Section 3: Which Category?
Here, I have to tick “Tier 1 Dependant”. Please correct me if I am wrong.
Section 4: Knowledge of language and life in the UK
Question 4.2: Is your partner is applying with you, is he or she aged 18-64?
Since my spouse is already a British Citizen, which option I should choose here?
I have my LIUK certificate & NARIC certificate for English knowledge
Section 5: Your home and finances
a. 5.3 Are you working in the UK?
Though I am working as a contractor, do I need to say ‘Yes’ & fill in my salary here?
(Since my wife is a permanent employee, it would be straight forward to get payslips, employee letter etc)
b. 5.6 Filling details of income source
Should I mention my salary details here? I can fill my wife’s salary details since she has all required documents
Section 6: Immigration History
It asks the details of main applicant which means me or my wife?
Should I fill details about my absences from UK? ( it is less than 125 days in the past 5 years)
Section 7: Personal History
7.13 How long have you lived in the UK?
Since I am living in UK since 2009 with Tier 2 ICT but moved a PBS dependant of my wife in 2012. Should I consider years only since I moved as PBS Dependant?
Section 8: Photographs
Since already I sent 2 photos for PBS dependant extension, do I need to attach photos again for ILR?
Section 9: Tier 1 Points scoring assessment
I guess we can skip this section
Much appreciate your earliest response.
Many Thanks in advance.