It is actually easy as there is a handy self service option.
When you visit the login page here:
https://global.mypcorp.com/login
Select the option FORGOT PASSWORD, then use your public email address (initial.lastname@itechealth.com.au) to have password recovery instructions sent to your email.
From there you just need to check your email and follow the steps in the emails sent from MYP.
If you get stuck, contact support@itecgroup.com.au or call us on 07 4044 1020