there’s no pathfinder-like tool within hype.
if you search www or the forum (just a hint 
) you may come up with ‘clip-path’ property.
one example: Help please: movable clip-path
as always: there’ll be other solutions around too 
edit: i guess you will also be able to achieve it with hypes elipse … just reposition the background examples will be within the forum … i’m sure
-> and the background-clip-path <- have a look at your other threads