Use google chrome for now

How to use CidEcho Managerzone Tool

Login into your managerzone account
Go to Clubhouse tab
Go to Squad sub tab
Go to Squad Summary sub menu item
Select your players like in the screenshot
Copy the selected text (right click -> Copy)
Return to this page and paste the text in the white textarea below
Press the Start button

After pressing the Start button you will see all your players statistics and also be able to choose a tactic and this tool will show you the best team.