ok so I made a backup using the program "Kbackup" on my kali linux. it created a .tar archive and for the life of me i cant figure out how to restore it using kbackup because it says it can but even the documentation doesnt explain how. it does say that it automatically restores the files from each part of the directory i backed up to their original locations, (for example, everything under /etc gets restored to /etc and /opt files to /opt, etc. etc.)
this is the link to the documentation : https://kbackup.sourceforge.net/manual/node45.html
and a Screenshot of the page i mentioned 
any advice would be appreciated. im not sure if i shoudl just restore the backup with tar or kbackup. would tar put everything where it goes?
update: ok so here are the steps i follow for making a backup using the kbackup program and where im stuck
first i open kbackup and use the GUI on the left hand side is all the files in my directory, i selected the ones i wanted to backup, 
then on the right hand side you select the location for the backup to be saved, in this case i used my external usb thumb drive 
then you start backup and it will eventually complete.
when it does it leaves me with a .tar folder compressed in the location i saved it.
the output for the cli version of the program doesnt even mention restoring at all. 