Tick each box before you move to the next stage. Copy it into Notion and run your next release against it.
The "Who has it" line tells you who is allowed to touch the product at each stage. That line is the whole point: the audience widens as the quality bar rises.
Who has it: no one outside the product team.
You are not enough on your own here. Do not stop at this stage.
Who has it: still internal only. No real users.
This is your last quiet window to break things before someone who depends on the product does.