How to backup different sites on 1 vds via duplicity?

Question

Backup

there is a VDS on it to spin several sites
, you need to configure duplicity to create backup copies of files that belong to individual sites ;
the paths are standard
/var/www/site1
/var/www/
site2
; --name site1
but something is wrong, I read the documentation, I did not quite understand the parameters that I used,
can you share your experience?