Please note the following points in case logging for first time:

User id: Enter Your Payroll number prefixed by P.
For example if your payroll number is 44440004, User id will be P44440004.

Initial Password: Initial password is your date of birth prefixed by rpl.
For example if your date of birth is 23.09.1987 (DD.MM.YYYY) then initial password is rpl23.09.1987