Seniors of the group can Impeach the Leader after 7 days of inactivity, Anbu and other members can Impeach the Leader after 14 days .. But this comes with some requirements, and it is to spend 150 ingots .. All members of the group are going to be notified by a System Message that you're gonna receive once the Impeachment becomes available ..

thank you for the information

Dang! 150 ingot for an inconsiderate GL? Guess we'll have to wait it out then. By the way if both Leader and Senior isn't active for about a week, customer support says we have to wait for 2 days before the impeachment goes to the anbu. Is that true?

yes, 7 days after the Leader went missing, Seniors will be notified for the Impeachment and they will have the power to impeach the leader for the cost of 150 ingots .. after 14 days, Anbus will be notified too,and its same, the Anbu member should have 150 ingots to impeach the leader so you have no choice but to spend ..