Hello
Please check "Advertisement Board" (
ordasoft.com/advertisement-board-joomla-classifieds-extension ) it is very simply extension for create Ads sites. It very light and have small features.
But free version created yet more simply.
Only In Pro version you may set
- user from which user groups can add ADs
- How many adds may add users for some user group
- auto approve ads from some user group
Regards
OrdaSof team