Add-ons you already have
An add-on is an extra capability installed on this computer, such as a calendar or a customer list. Installed does not mean this conversation is using it.
Type /extension to see add-ons installed on this computer. Enter opens one. You can remove it from there.
Click here, then use the arrow keys or the space bar
A sample of the terminal. Nothing here is your conversation.
Type /extension to see what is installed, open one, or remove it.
Type /extension use to turn one on for this conversation only.