I haven't looked at the project yet, but... your comment precludes the possibility of your computer having a wired ethernet connection to the internet.

Then the camera could be placed anywhere as long as it can get power, and your computer could connect to both the camera and the internet.

But, I don't understand why the project would really benefit from the Pi Zero hosting a wifi hotspot... it seems like it would be better for it to just join an existing wifi network.