There are 3 methods to identify which security groups are associated to an entry.
To add a Security column to the Navigation Pane, right-click on the column Name in the Navigation Pane and select Column Chooser.
Double-Click on Security and the column Security will now be added and you would be able to see what security groups are apply to your entry.
When editing your entry, you will notice a blue shield at the bottom of your screen.
RDP Session - Blue Shield
Click on the blue shield to see your entry security rights.
In the Administration ribbon, select Reports.
Administration - Reports
Select Security in the side menu and then click on Security group.
Security Group Report
In the Security Group Report you will notice the Security Groups column showing you what security group your entry is part of.
Security Groups column