How can i justify tds as given below

dgkumar (accountant) (51 Points)

04 April 2017  
Dear Sir, Some of my staff drawing their salary from 276000 to 300000 p/a and their salaries issues on 10th every month and their incentives will issue on 20th every month (whoever earns) Now i have to do TDS from their salaries. Now my doubt is that 1) How can i club their salary and incentives for a month and how can i deduct tds from their salary. 2) example Ram having total salary income for a month is 23000/- (276000/- annual income) after deducting 250000/- taxable income is 26000/-. so his payable tax is 1300/- per year. per month tds is 108/- deductible. Can i deduct less than /more than 100 as tds?