How to block JUST outgoing traffic from device?

> [...] I searched "Block a Service or Application From Accessing the
> Internet" which yielded zero results.

   Well, duh.  Try searching for something simpler, like, say, "block".
It's not complicated.

> [...] I am not sure if the manual is referring to blocking total
> access or just outgoing. [...]

   I can think of one reliable way to find out.

> [...] Does some combination of Block Services, all ports, Only This IP
> Address, and so on do what you want? [...]

   It may not be possible, but if reading the documentation doesn't
answer the question (and even if it does), then I'd run the experiment.

> [...] You either block everything or pass everything

   Define "everything".  As I read the User Manual, you get to choose
the ports affected.  What if incoming and outgoing use different ports?

   It's not as if anyone here knows what this "a device" actually does.