Data blending is an industry term to describe the process of combining information from multiple sources. To get a deeper understanding of data and improve the decision-making processes.
When looking to combine a variety of metrics you might wish to build your own formula that takes metrics from different channels.
Click on any widget and next to the channel you are using there will be three dots that you can hover over and click on 'create custom formula'.
Once you make that selection a formula builder interface will pop up:
Here you have full control of what channels or metrics you want to use. You can multiply or divide metrics as well as put them into brackets for more complex equations. Just don't forget to give it a name at the top, specify the value type and outline positive or negative increase.
Once that is all set click on 'create custom formula' to see it in action.
To see data blending in action check out this video: