By using the Radio, you can change the protagonist's tactics by selecting "Change tactics". Only the protagonist's tactics can be changed - those of the other party members are locked.
When selecting tactics, a brief explanation will be given for each and a detailed explanation will be displayed after a tactic is selected.
Changing your tactics before a difficult battle may give you an advantage.
Because each tactic has its advantages and disadvantages, it is important to consider the characteristics of your Stand and the enemy you are fighting when selecting one.