To select a set for all source values to be mapped to, click "Select set".
Scroll to find a set suitable for the source value to be mapped, or type to search for a suitable set, and click to select the set.
The target set will be selected.
If there is a target value within the selected target set that matches the uploaded source value, target set will be set on each row and target value will be added automatically.
If there is no target value within the selected target set that matches the uploaded source value, target value needs to be selected manually.