What’s The Most Efficient Way To Target One Headline To 10 Different Audience IDs In A Feed?

What’s The Most Efficient Way To Target One Headline To 10 Different Audience IDs In A Feed?

• Add 10 rows and 10 columns with an audience ID in each row and column
• Add 10 comma-separated audience IDs into one cell
• Add 10 columns with a different audience ID in each column
• Add 10 rows with a different audience ID in each row