If you want to delete a group chat on Instagram, there are a few different ways to go about it. The first way is to open the group chat and click on the three lines in the top left corner of the chat window. From here, you can select “Delete Group” from the menu that pops up. If you want to delete a specific message or conversation from within a group chat, you can do so by clicking on the message or conversation that you want to delete and then selecting “Delete” from the menu that pops up. Finally, if you just want to delete all of your messages from a group chat, you can click on the “All Messages” button at the bottom of the window and then select “Delete All Messages” from the menu that pops up. ..