A few fields provide the Populate downwards command on the right-click menu to make entering new data easier. This function will copy the value of the current field to all fields/records underneath.
Screens with a matrix view like the Checklists tab on P.30.22 Commercial Evaluation additionally provide the Populate sidewards and Populate downwards and sidewards options. This allows you to copy the value of the current field to all appropriate fields to the side and (when selecting downwards and sideways) to all records underneath.
This would be the result when selecting Populate downwards and sidewards in the example above: