which module support to add many users at a time by admin?

you can import users from a csv file:
use the script in Universal Site conversion scripts

ps: if you are persian its better to ask your questions at xoops.ir as a local support site.

I just wanted to say that I converted the import users converter over to 2.2.3 a long time ago. The only strange thing is, the users don't show up on the search until after they have logged in at least once and have updated their profiles. However, they are in the database and can log in. If anyone needs it PM me and I will zip it up. I have it in two formats. One for importing from one XOOPS site to another, so it doesn't double encrypt the passwords, and one for importing from other applications without pre-encrypted passwords.

It works on 2.2.5rc2 as well. I am assuming it will work on any of the 2.2 versions. I just used it to import over 9000 users and it only took a minute.