The Source tab is the first tab that you see when you create an activity. This tab has two options – “I would like to display” and “from”.
I would like to display helps you in choosing the type of activity that you want to create. You can display recent conversions, notifications bar, floating button, or even reviews.
The “from” only shows up when you want to display recent conversions in your notifications. This helps you choose the source for your notifications. You can choose the addon that you have activated earlier to display your notifications.