Most action rolls use Q to determine how well the character performed the action. What is Q? Let’s take combat as an example, since the combat roll is often the most common action roll.
The idea is that the higher the Q, the more control the attacker has over the attack. The attacker can decide that speed is more important than accuracy, or assign a higher priority to defense, all within the constraints of Q.
Remember that non-player characters shouldn’t use the options you haven’t told the players about.
All of those options can be a bit confusing at first. You may well want to inform the players only of the attack/defense options at first. When they’re comfortable with that, describe the rest: performance time, damage, and multiple opponents.
Once the players understand the use of Q for combat, they should understand its use for all actions.