To be able to share your teammate's Pod, the Pod owner needs to add your team in the Pod settings so you can access the Pod and collaborate.
Here's how the Pod owner can do that -
Click on the cog icon ⚙️ on the upper right-hand side of the Pod editor
Click Pod Settings
Select the team or "Everyone" in your workspace you're giving access to
You can now share the Pod via Editor mode (where you can manage the Share settings & have access to the advanced options);
or via Live mode -
You can also refer these related articles below: