The turn order for allies and enemies is displayed in the timeline, starting with the character on the right.
You can manipulate the turn order by using skills or battle items.
Look at enemy icons on the timeline to see when enemy turns will come.
It shows what will happen on their turn, unless the enemy is making a single-target attack.
Be careful on turns displayed as "???", because this means the enemy will use a special or powerful skill.
There are also Effect Panels on the Timeline. These affect characters who acquire the panels at the start of their turn.
Take control of turn order to secure beneficial effects in battle.