Nero burning software

i have 9 folders that i want to backup (to have a copy), and would like to do it once a week.
during the week i am adding more data to these 9 folders.
how can i do this copy with 1 or 2 mouse clicks.( i do not want to
click “add “every time and reselect all these 9 folders every time)
Do i have to do save at the end of the burning process every time or only at the first time?
next time when i use this (saved) .NRI file
is it sure that the next burn will includs the changes made to all these 9 folders?
is it going to burn complitly new set or will burn only the changes?
thank you in advance