Drop-down field with only one value

1. How more then one option can be selected in drop down?
2. Which datatype displays a drop down list to choose one of the values *?

How more then one option can be selected in drop down?

To select multiple options in a drop-down list, use the multiple properties. It allows you to select more than one option while pressing CTRL key.

Which datatype displays a drop down list to choose one of the values *?

Answer. The field definitions include a field called InformedType which is using the Boolean Data Type and a Form Control of drop down list.