They need to submit protection lists to the league, which will have one goalie on it (regardless of going 7F-3D or 8 skaters). It's right at the top.
They must also have at least one other goalie eligible to be exposed.
Here is what the NHL says, which is the exact thing CF is saying in their FAQ.
It's very straight-forward.
Right now, the Rangers need to bring on one other eligible goalie to protect/expose.
I'm reading from the same document and not seeing a protection requirement. Just a limit.
If they trade away Georgiev this offseason, they need to bring on two to protect/expose.