How do i make a multi dvd-r from proper dvds

i’ve got a box set of dvds ( sharpe) and i want to rip them to back up but i want to make multi dvds. how do i compress them and burn them on to dvds. i’ve never made a multi film dvd before so plz keep it as simple as possible. thanks

DVD2One has a feature to allow 2 dvd’s to be imported to make one DVDR from it, movie only though.