如何从两个下拉列表中将一行添加到表中，并在选择时删除

I have two drop down list first for projects second for employees I need when select value from first drop down list(projects) then select value from second drop down list (employee) add new row of selected value from both two drop down list to table as following suppose i select one adil value selected removed from two drop down list both and inserted in table and when make remove from table added to drop down list my code as followingI have two drop down list first for projects se