The Z-OptimiZr System Tray utility is launched after the installation of Z-OptimiZr for File Servers and then at next Windows startups.

 
If you do not see the icon of the Z-OptimiZr System Tray utility:

displayed in the Windows task bar system tray area, it could be that you closed it earlier using its Quit menu.

It could also be that you are using a Windows account other than the one for which Z-OptimiZr for File Servers was installed.
 
To solve this problem, launch the Z-OptimiZr System Tray utility manually:

On 32-bit versions of Windows:
C:\Program Files (x86)\MK Net Work\Z-OptimiZr for File Servers\ZOptFSTray.exe

On 64-bit versions of Windows:
C:\Program Files\MK Net Work\Z-OptimiZr for File Servers\ZOptFSTray.exe

 
Then, once the Z-OptimiZr icon displayed in the Windows task bar system tray, select the Options menu:

Z-OptimiZr for File Servers system tray utility Options menu

 
Then, in the Options panel, check the "Launch the task bar system tray utility at Windows startup" option.

Z-OptimiZr for File Servers Options