Setup > Event Planning > Worksheets - Click "Create New Worksheet" button or select an existing worksheet.
Click "New Field" button in the section you want the list to appear.
Locate "Field Type:" field. Select "Drop-Down" or "Select Text" from the drop-down box. Enter information in "Title:" and "Description:" fields. Click "Add New Field" button.
Click "Edit" button for the new field you just created.
Locate "Default Value(s):" field. Select list from drop-down box. Click "Make Changes" button.
Verify list has been added to field. Drop-Down and Select Text examples both shown below.