People who farm the monolith keys, what do you focus ?

Edit: this is regarding monolith maps!!the actual keys in your mapdevice. Not the zone encounters. Titel was unclear!

Im curious as im reading alot of people saying little to no rewards and everyones seems to focus bosses.

• How does the fight work exactly ?

• when do you reset or next wave by standing in the middle

• are you focussing on just bosses or for example currency icons and bosses or something else ?

Ive done a 4 and 5 key one with no jewel or exalts. Both 2 people party.

1 cycloner for trash and easy boss cull and 1 minion build for hard dps on bosses.