Navigate to the Digest portal at the top right of your dashboard screen and click on your desired Digest (or create a new one). Select your desired Digest from the menu on the left and click into the line that says ‘Add a Sender.’ From here, you will see a drop-down of all your existing Senders, which will update as you start typing a Sender name. Simply select the desired Senders and they will be added to the Digest list below. From there, you have the option to add a Filter to the Sender (Note: this is separate from any Filter settings you have enabled for that Sender in the main dashboard) and can also control the position of where this Sender’s emails will appear in your Digest.
Remember to hit Save and adjust any Sender settings on the dashboard as needed!