Change the Default Data Columns on a Dashboard Watchlist?

There's not a way to adjust the default metrics on the Data tab but you can create a metric set in the Comp Tables tool and pull metric set into the Data tab. For more detail on creating a metric set, you can view the article linked here.

Once you've created the metric set you can edit the data columns using the following instructions

1. Select the three dots at the top right of the module
2. Select Edit Data Columns
3. Select Open Metric Set
4. Select the metric set from the list