«With the Check Role Property, you gain the ability to limit access to specific areas of your HMI to only those HMI User Roles that need it. This ensures that your system is secure and that each user can only see and interact with the parts of the HMI that are relevant to their job.»
In this case the element will only we visible to Operators.
The Check Role Property returns true or false depending on whether the currently signed-in HMI User has the roles you specified.