hi, i recently had a container coming from china so I purchased 15ish Hikvision cameras, specifically this model (translated using Google Chrome):

A few questions:
1. All of these are running the chinese firmware, is this the latest version or are there international/english firmwares which are newer and possibly with more features?
2. I have enabled motion detection on a few of these cameras. Looking at instructions online, they show a grid that could be configured. This way the motion could be pinpointed to a specific area. I cannot find the grid option anywhere and it only lets me manually draw the motion area. Is there any way to get the grid?
3. I have these cameras added to HomeAssistant temporarily, apparently there are 3 possible streams available from the camera: main stream, sub stream, main stream (event), transcoded stream. I understand main and sub streams, what are the event and transcoded streams?
4. Is there any way to highlight motion in any stream? I have a few reolink cameras and they are able to draw a square around the motion they detect. This would help me pinpoint what keeps setting off the motion alarm.
Any help would be greately appreciated. Thanks!

A few questions:
1. All of these are running the chinese firmware, is this the latest version or are there international/english firmwares which are newer and possibly with more features?
2. I have enabled motion detection on a few of these cameras. Looking at instructions online, they show a grid that could be configured. This way the motion could be pinpointed to a specific area. I cannot find the grid option anywhere and it only lets me manually draw the motion area. Is there any way to get the grid?
3. I have these cameras added to HomeAssistant temporarily, apparently there are 3 possible streams available from the camera: main stream, sub stream, main stream (event), transcoded stream. I understand main and sub streams, what are the event and transcoded streams?
4. Is there any way to highlight motion in any stream? I have a few reolink cameras and they are able to draw a square around the motion they detect. This would help me pinpoint what keeps setting off the motion alarm.
Any help would be greately appreciated. Thanks!