Make sure you select a camera first then one left click on the time and date.
By the way does anyone know how to rewind playback using ivms-4200?
You're obviously not using the latest IVMS 4200 version. It no longer works this way.
How do you find which version you have please?
Do you have a link to the latest version?
Choose Help and About on the drop down.
View attachment 10997
You can download it here:
http://overseas.hikvision.com/us/Tools_84.html
I'm using the full version.
It was much better the way it was.