The HandsOn Connect app is a Managed Package
With Great Power comes Great Responsibility.
Before customizing anything in HandsOn Connect - be sure to read this entire chapter!
You can customize HandsOn Connect, in many, many ways -- but some things cannot be edited, because they are part of the Managed Package.
Anything that has the icon shown above is part of the HandsOn Connect Application.
This means you do not have full control over editing this item. You can make some changes, but some are not permitted. That's because the Hard-Coding of HandsOn Connect requires certain things to never be changed. Otherwise, HandsOn Connect updates would not be possible.
To keep the product as flexible as possible - System Administrators have the ability to edit fields that SHOULDN'T be changed.
Doing so could prevent HandsOn Connect's hard-coding from functioning properly.
To determine what fields you should and shouldn't alter -- you can refer to the HandsOn Connect Field List.