In Action Phase, players will perform various actions as long as they can or wish to.
In order to use an action, first, a player must declare which action they will take. For example - MOVE action.
Second, they need to pay the cost of that action by depleting their Energy Cards.
Finally, they apply the actions effect. For example - after using a MOVE action, a player can move one of their character 1 or 2 spaces along the lines.