permissions - Plesk 12 does not create IUSR_site_name user -

in our plesk 9.5 installation plesk automatically created user iusr_site_name, example, subscription username afl, plesk created iusr_afl user.

then, when need web users have read , write permissions server directory, example /httpdocs/data, give iusr_afl user read , write permissions.

how can accomplish same plesk 12? how can give web user read , write permissions in order create , modify files in specific directories? have tried, plesk 12 not create iusr_afl user.

thank help!

plesk creates sites working in application pools working under iwpg_<user name> user.

there setting on domain > hosting settings > "additional write/modify permissions" provide write permissions app pool's user.