This article will help you to:
Create a multi-source widget
Replicate a simple example
In many cases, you want to be able to cross-reference data coming from different Data Sources.
Setting up a multi-source widget
After selecting the widget of your choice, use the "Advanced mode" view by double-clicking on the widget or by clicking on "Advanced mode" (located in the top right corner of your screen once the widget has been selected). You can then apply each Data Source at the metric set or metric level.
For instance, I want to display the cost per session based on my Facebook spend. In other words, I want to display my Facebook Ads spend relative to my Google Analytics sessions.
Display your Facebook Ads spend. To do this, select your column and then assign the Facebook Ads Data Source of your choice.
View your Google Analytics sessions. Select your column and assign the Google Analytics Data Source of your choice.
Calculate the cost per session using a formula.
You can go further by applying a filter to your Google Analytics column so that, for example, only sessions from Facebook Ads campaigns are displayed.
And above all, always keep in mind the inheritance principle when setting up multi-source widgets!