Sec 80GG reads as under:
"In computing the total income of an assessee, not being an assessee having any income falling within clause (13A) of section 10, there shall be deducted any expenditure incurred by him in excess of ten per cent of his total income towards payment of rent (by whatever name called) in respect of any furnished or unfurnished accommodation occupied by him for the purposes of his own residence, to the extent to which such excess expenditure does not exceed two thousand rupees per month or twenty-five per cent of his total income for the year, whichever is less, .....................................
I am not sure, but I think every member can be deemed to pay rent for their own residence and such claim can be taken. However
Under section 80GG,"expenditure incurred by him in excess of ten percent towads payments or rent is deductible"
and
further such excees expenditure should not exceed Rs. 2,000/ month or 25% of his total income of the year"
In other words, if rent paid is less than 10% of total income of individual, no deduction will be allowed.
Assuming, every member is paying Rs. 5000 rent per month, then, every member must have total income before allowing deduction of 80GG of atleast Rs. 5000*10*12 = Rs. 6,00,000.