Step 1 : Log into N99panel. From under N99panel dashboard, click 'MySQL'
Step 2 : From under MySQL section, click 'MySQL Pairs'
Step 3 : Then click on 'phpMyAdmin'
The login credentials of N99panel console would work with phpMyAdmin also unless you have changed the password.
We would also like to add here that operations such as MySQL DB creation, MySQL user creation, MySQL DB-User mapping etc., can easily be done from N99panel console without requiring advance SQL knowledge and without using phpMyAdmin. Infact we highly recommend that you use N99panel console to manage all aspects of your MySQL administration.