All changes are working.
One issue. The set grouping at startup makes no sense as a check box. It's not about turning it off and on, it's about setting it to the current value. If you want to change get it, you have to turn it off and then on again.
If you know the current grouping when you go I to the settings, maybe it would make more sense to have a button here and a label to say "set startup grouping to whatever_it_is" . Maybe have a second button for none.
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