Player Targeting in Combat

This is probably obvious, but I cannot figure out how players can target an enemy without the GM's assistance. Per what I've found in the wiki, I have the combat tracker and a map with all actors displayed. The GM can use the combat tracker to target an enemy on their behalf, but I'm not seeing anything in the characters' sheets or on the combat map that would allow players to target on their own.

Players (and the GM) can target (and de-target) by holding the Control key and clicking on the target token or combat tracker entry.

I knew it was something obvious. Thanks. I was racking my brain over that.