Vat deduction

Dear All Sirs I am very confussion about deduction of vat 1) My vendor is supplying me a material & Labour charges Invoice different different, Vat Invoice Total is 45000/- and Labour Invoice total 35000/ Gross Total is 80000/- Now my question is Can I deduct tds 2% on 80,000/- Or Can I deduct Tds 1% on 35000/- Can I wait when total vat Invoice become to 75000/- (Now it is 45000) Can I wait when total vat Invoice become to 75000/- (Now it is 35000) Please suggest me