When you create external connections at the row level, the connection is automatically applied to the row. For information, see Creating External Connections.
To apply external connections to objects:
In the File Connections, field, click and select an external connection to apply.
Select rows to which to apply the external connection.
Note:
You can use Shift + Click and Alt + Click to select multiple rows. To apply the selected external connection to all rows, click Select All.