1. login to Admin Console
2. go to {Configuration > Website > General} section
3. click Edit link next to Website name setting
4. change Input Type field value to Picker
5. specify 1=+one||2=+two||3=+three in the List of Values field
6. save changes
7. confirm, that the Selected Items list is empty and 3 configured above items (one, two and three) are shown in the Available Items list
8. move any 1 or 2 items from Available Items to Selected Items list and save changes
9. confirm, that items stayed in Available Items and Selected Items lists (as they were moved) after the page is reloaded
10. move all items from the Selected Items list into the Available Items list and save changes
11. confirm, that items stayed in Available Items and Selected Items lists (as they were moved) after the page is reloaded
12. confirm, that items adding items to a list would sort that list alphabetically

v1.1:

• replaced Checkboxes with Picker in item 4 of the test plan