A. Any property in your Pageview event that is either a String or a List of Strings.
Your Content Read tab is the only area that is customizable within Insights.
To find a property in your Pageview event that's either a string or a list of strings, you'll need to:
1. Under Audience, head to Audience Events
2. On the right of your Pageview event, select 'Quick View' so that'll you'll see 'Collapse' and a list of your properties
3. On the last column, you'll be able to identify which property is a 'String' or a 'List of Strings'
To get this added to your project or if you have any questions, please contact customer support by emailing email@example.com or chat with the Customer Operations Team via the LiveChat icon in the bottom right corner of your screen.