hitpoints on a section

can you just create hitpoint for a section of a song or do yoy have to do the entire song ?

Hitpoints are generated automatically across all audio tracks.
You just need to go to the section you’re interested in and edit those.

Not if you have automatic hitpoint detection disabled in prefs.
In which case you can generate hitpoints on events but I have a feeling (not checked) that this actually analyses and generates hitpoints on the entire audio file referenced by this event.

Perhaps what you need is a Marker more than a “hit point” per se?