15.Group message can be set to the top: the group owner can set the top group message, which is convenient for group members to view important messages, and can directly quote and reply.
14.Forbidden words of all group members: after the group members are forbidden, only the group leader can speak, which is helpful to inform relevant matters or training propaganda, and avoid being swiped on the screen.
12.Group leader can withdraw group message: group leader can withdraw any message sent by any group member to avoid being disturbed by advertisement.
Group members are not friends and can not view each other's information, so as to avoid group members being added as friends maliciously.
11.Message reference reply: for text messages, you can press the reference reply for a long time to avoid message redundancy.