Re: Google Drive ... Yes, sorry about the case you bumped into. We'll be making some changes to make it clearer when people add it following the flow that you did.
Re: Recording and alert video. Yes, it records continuously to the internal drive, and, if you configure it to, will upload your alert video to cloud storage as well.
Capture1: Yes, "use home settings" means use the default for the whole home. If you uncheck that box you can override the global default for a specific camera. This is explained in the "Learning More about Camect" guide linked off
camect.com/welcome in the "Configuring Settings" section.
Why does it seem like a bug that you can add storage both locally and globally? You can configure a single camera to upload, or you can set all your cameras up to upload by default.
Capture2: You can't actually select the "internal disk" for video storage if you have the large drive active. (When you try it will say the partition is too small.) However, if the large disk is unavailable (e.g. because you detached the bottom part of the unit) there's a limited amount of space available on the internal SSD that can be used for video storage.
Capture3: No, your Camect device has no ability to be on WiFi. Like the rest of the settings on that page, those WiFi settings are the global defaults for settings on your cameras. When you buy new cameras and plug them into your network, Camect can detect and set them up automatically if they're from a brand for which we have enhanced support (e.g. Amcrest). For WiFi cameras that can be plugged in too, you plug them in, Camect will configure them (including WiFi), and then you disconnect them from the wired network and they should come up on the WiFi network.