tds on salary

Dear Sir/Madam,

In my office 2 sales earnings 4.5 lakhs for F.Y.2018-19.

My queries are
1) while deducting TDs, we should consider standard deduction even if they don't give investment proof.
2)If they give investment proof even then we consider standard deduction while calculating TDs liability
3) Can we deduction if we give partner remuneration to two partner monthly 60000/- each partner

please help me in this regard