How do I Use a Skill

Skill cannot be activated in a combat unless it has been loaded. Attack skills and secondary skills cannot be loaded until they hit level 1. Simply click "Load Skill" button and select your target skills, then you can load them.
Before Loading: Click "Load Attack Skill 1"

　　 Select Skill: Select the skills you want to load

　　 After Loading: Show the skills that have been loaded