Change my leader character

Aldoconde

Hi, i just have a question, could anyone tell me how to change my leader character? I have chewie atm but i think my allies would benefit more from my Lumi

Stekcir_Leinad

Click on them once to remove them both from your team, then click Luminara and she will be in the leader slot.

Preemo_Magin

If you mean Arena, play and lose, which will accomplish as a goal a new defense team to hold current spot.