@Hrvoje_Brlek
Unfortunately, even with R81.20, which is our latest server version, we still do not have that option for On-Premise. However, there is a registry key value that you can edit to make the change. It is located here:
HKEY_CURRENT_USER\SOFTWARE\CheckPoint\Endpoint Security\UIFramework\ClassicUI
Value of 1 = Old/Classic UI will be used
Value of 0 = New UI will be used
Check to see if that works for you.
Justin Cortez
Technology Leader | Endpoint Cyber Security Products | Americas Endpoint Team