Is it possible to use an existing google project for nest cameras in go2rtc/frigate or do I need to set a new project?

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As the title says, I have an existing nest project that works in HAOS, but doesn’t record. I would like to setup a NVR (frigate or agent). Do I need to create a separate project on GCloud? If not where do I find the access token the go2rtc interface seems to need?