جَلَسَ: قَعَدَ to sit down, sit, take a seat, seat oneself

جَلَسَ: اِنْعَقَدَ، اِلْتَأمَ to convene, meet, assemble, gather, sit, be in session

جَلَسَ على العَرْش to accede to, ascend (the throne)