I saw some people saying it was the “understood” key but then other people said they replaced it in Overwatch 2 with another key and it’s no longer on “understood”. Does anyone know what the new key is? 
Thanks so much, I’ve wanted to know for ages and tried understood while looking at the objective loads of times but it’s never worked.
Thank you so much for any help!
For me, I line my crosshair up with the point marker/objective marker, the one you can see through walls, and hit the ping button.
Tho this can be obscured, like if you’re a support and a teammate that’s missing some hp is aligned between you and the objective marker, the ping button will make your hero say “come to me for healing”. Of course of you hit the ping button while there’s an enemy in line of sight, you’ll just ping the enemy.
Make sure there’s no players between you and the objective and it should work!
How do you say “attack/defend the objective”? You tell your team mates “group up here…don’t poke yet” then they go rambo and die so you have to wait longer for respawn. And that is how you say attack/defend the objective in Overwatch 2!
as already mentioned using ping (universal) while looking at the point, but you can also set a specific attack / defense command in the communication wheel in the settings.
they did Upgrade that com wheel a while ago and it had quite a few nifty ones, especially considering each and every single one of them has its own dedicated voice line for each hero.
they essentially gave out like 300 voice lines for free if we are honest. which do not take up a voice line slot but Instead a com wheel slot.