For a call in progress, you can share a link through app.ringover.com to allow a third person 👨 to join the conversation.
Click on the “Plus” button ➕ on the keypad and select “Share”. A link to the conversation 🔗 will be automatically copied to your clipboard:
Click on the “Plus” button ➕ on the keypad and select “Share”. A link to the conversation 🔗 will be automatically copied to your clipboard:

Now all you need to do is paste the link where you want! 👌