I've had this one a few times now, so just a quick post to help you find the hidden pull-out.
At the right hand side of the Live view screen you will see a small arrow:
Click on that and a fly-out will appear from the right revealing all of your zoom, focus, and preset controls:
Click on the Help button at the top right of any page for further help and information contextually appropriate to the page you are currently on e.g.:
For...
How do I access the zoom controls on a Hikvision camera?
At the right hand side of the Live view screen you will see a small arrow:
Click on that and a fly-out will appear from the right revealing all of your zoom, focus, and preset controls:
Click on the Help button at the top right of any page for further help and information contextually appropriate to the page you are currently on e.g.:
For...
How do I access the zoom controls on a Hikvision camera?