Heroes can be organized for each content at the "Party" that can be found at the bottom left corner of the game. You can also conduct skill research or hero training.
There are four tabs in the Party menu.
Please read below for the details.
■ Party Information
1. Attack: Arrange Hero Parties that you can control such as Adventure, Battle, Etc.
2. Defense: Arrange Defense Parties that will fight against opponents in PVP/Guild Wars.
3. Skill Research: Research Party skills and passive skills [Completing time varies per research]
4. Hero Training: Improve heroes' ability per type [Blessing of Valor required]