Sabre Team Infinite action points
Choose any mission and four characters. Equip, then deploy the characters. Now click on the blueprint icon on the main menu. Then, select each character in the following order, then click on the left hand icon: 3, 4, 1, 2, 2, 4, 1, 3.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original