A little more accurate / relevant, for each switch in the group, except the one you want to activate initially,
- select the switch (not initially active),
- in the "Button Attributes" section, in the "Group" field, enter the identifier of the initially active switch in this group (or click the edit icon on the right and select it in the pop-up list by clicking on the switch to the left of its name).
- Click OK.
Repeat for all initially inactive switches that should be associated with the initially active. Please note that later you can change the initially active one by simply making radioobutton Active by checking the active checkbox in the "Button Attributes" section. If it is already marked active, cancel it first.
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