How to reset Help Desk Software by ManageEngine ServiceDesk Plus | 9.0 - admin password?

How to reset Help Desk Software by ManageEngine ServiceDesk Plus | 9.0 - admin password?

Hi,
We are running "Help Desk Software by ManageEngine ServiceDesk Plus | 9.0". It was configured by  previous IT guy and I need to reset the admin 
password. I was wondering, how to do that ?

Any help appreciated.

Thanks.

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