When creating the options for choice fields you will see two options: "specify choices here" and "use a pre-defined choice list".

When specific choices is selected you will see a box labeled choices where you can enter in the choice options you wish to use for that choice field. Each option should be entered on its own row within the choice list box.

The Sort A-Z button can be clicked on to have the choice list sorted alphabetically, otherwise, the list will be presented in the order that you have entered the options in.

If you wish to add a values for the choice options you will want to use a semicolon between the label and value for each choice option.