Tax return of charitable trust

HI- i am working as volunteer for charitable trust and need help with following to fill in the tax returns.

a) which sec applies to audit of trust accounts

b) in ITR7 which schedule should i fill in the details of trust income and expense

c) who will sign the return. is it the founder of trust

d)initial cash by founder,is it to be shown as corpus in sch J of ITR 7, 

e) in sch K of ITR 7, do we hv to provide PAN details of all the trustees

f) what r the documents to be uploaded with the return. i see somewhere written no docs are to b submitted. so audited BS and receipt and payment account not to be submitted?

thanks,Ashima