How do I create a group chat in Skype on desktop?

1. Select the  New Chat button and select New Group Chat from the list.
2. Select  Update profile picture if you want to upload a photo for your group.
3. Enter a name for your group, which is required to continue.
4. Select the Next arrow to create your group.
5. In the Create new group window, select the contacts from your suggested list or select Search, and then type the name of the contact you want to add. Continue searching for and adding up to 600 total contacts.
6. Select Done to start chatting. 

Learn more about customizing and managing group chats.