In Dragon Quest Heroes, you'll control a party of up to four characters, each with unique abilities and playstyles. You can switch between your active party members at any time during battle by pressing the L2/LT button. This is a critical mechanic for adapting to different enemy types and situations. For example, some characters excel at crowd control, while others are better suited for single-target damage or healing.

To manage your party outside of battle, access the 'Party' option from the main menu. Here, you can select which characters to bring into your active party, equip them with different weapons and armor, and allocate skill points. It's wise to have a balanced party composition, including a healer, a strong damage dealer, and a character with good area-of-effect attacks. Don't be afraid to experiment with different party setups to find what works best for specific missions or boss encounters. Regularly checking your party's equipment and skills will ensure they are always battle-ready.