How do you say 'hello!' '' 'Thank you!' 'Etc. In Overwatch?

Hi, I've been playing Overwatch for a while now and unfortunately forgetting how to use the voice commands (not the voicelines) like 'Hello!' '' 'Thanks!' 'Or supporters' 'Come on, I can heal you!' 'says. Can someone help me with that. BTW on a PC / laptop if that helps

Keep faith "C".

Press the "c" key, then you will get a selection. You can also set the buttons for the individual actions in the settings menu under Control.