If you are having only 2 values in your list box and you want the list box to have only 1 value selected at a time then you can use "Always One selected" option.
Select one value in the list box, then go to the properties of list box and check "Always One Selected Value" checkbox.
This way only one value will be selected at a time in list box.
Hope this helps!
You can limit the value to be selected in a list box.
Right Click the list box and goto properties.
In the General Tab click the checkbox 'Always One Selected Value'.
Now you will be able to limit to one selection in a list box.
Attached the file for your reference.
InduvidualListbox_1.qvw 177.5 K
can the field location be represented in a structure? So, HQ marks all fields below. CI pretends, Concord ' and, Karlsruhe ' and HQ should be not selected any more. If Concord is selected, CI is selected, if ‘Concord ' and, Karlsruhe ' is selected, then CI is selected.
Can the choice be indicated in the diagram or in an additional box?
To achieve that you have to implement Hierarchy/HierarchyBelongsTo in the script and then tree view in the list box and then a tweak like a clever trigger.
But i would recommend to create a new thread to get more responses as this is a different requirement from the one you started with. And please close this thread if you have been answered for the first question.