Organizing Your Party
There are only some circumstances when you can organize party members. Depending on the situation, the characters who can join the party will differ.
Organizing Members by Status
First, choose the members who will take part in the mission. Then, after deciding what to equip and the squad command, you can decide who from your party members should be active members. The rest become reserve members. Apart from RTS missions, you can normally choose up to three active members. The initial character you choose as an active member will be the active leader by default.
Active members that have joined from the pool of reserve members will be invincible for eight seconds.
When switching your active leader, the new active leader will attack the surrounding area with a shock wave, and the old active leader and new active leader will switch positions. These two characters will be invincible until they have switched positions (until the character you now control has finished its switch pose).
Party Characteristics
Active members (your allies) other than the active leader have several special characteristics.
Follow the Active Leader
Normally, your party will follow the active leader when moving. However, if a party member gets caught behind a wall or some other scenery and gets separated from the active leader, the party member will warp to where the active leader is.
Individual Fighting
Your allies choose which enemies they attack, dodge enemy attacks, and use Defense commands on their own. Party members will give priority to enemies other than the one the active leader is targeting.
Damage and MP/AP Consumption Are Reduced
The damage your allies take is halved and the costs to MP and AG are cut down to a third of normal. This will help avoid any deaths your allies might sustain from battling enemies while out of your control.