There are two ways to edit data in DynamoDB: using the table and using the JSON editor dialog.
To add a new row to the table, click the button in the toolbar. To delete row, click the button. To edit cell, double-click it.
The changes are highlighted in the table. After all changes are made, click the button to preview changes or to submit them.
To create a new item, click the button in the toolbar. To edit an existing item, select it in the table or in JSON response and click the button.
In the opened dialog, edit the item as JSON or DynamoDB JSON and click Save changes to submit.