Password Manager Upgradation

Hi All,

Currently we are running a password Manager 5.7 and planned to upgrade 5.8.2 , the below listed doubts to be clarified in order to proceed.

1. Can we directly upgrade from 5.7 to 5.8.2?

2. Without uninstalling the current Version is it possible to migrate the required version?

3. And We have Admin ,Help -Desk and End User consoles are deployed in three different servers. are the three to be upgraded separately? 

4. Kindly share the up-gradation guide. or Video Tutorial for the same.

Thanks in advance.