How to install phpMyAdmin on iRedmail 0.9.7 on Centos with nginx

==== Required information ====
- iRedMail version (check /etc/iredmail-release): iRedMail 0.9.7
- Linux/BSD distribution name and version: CentOS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====
Hello guys,

I have successfully installed iRedMail 0.9.7 on Centos, with nginx. I can send and receive email. Now i what to install phpMyAdmin, to be able to administrate the database (MySQL) more easy.
The problem that I encounter is that after I've installed phpMyAdmin and wanted to access it I receive :404 NOT FOUND.
I have installed phpMyAdmin in /usr/shared/ and I created a link to /var/www
Do i need to do something else?

Thanks!