On desktop (MacOS and Windows) or on Wire for Web:
- Select a 1:1 conversation in the conversation list.
- Inside the conversation, click the conversation name.
- Click ADD PEOPLE to access your connections.
- Type the names of the people you want to add or click their avatars.
- When you are finished creating your group, click ADD TO CONVERSATION.
For instructions on how to do this on mobile, click here.