I thought I saw a technique to select a large number of Edges at once to add a Fillet, but now I cannot reproduce.
In the attached file I would like to quickly select all .5mm edges as shown and place a 5mm Fillet while ignoring the longer edges.
The Selection Toolbar in the Fillet PropertyManager is probably what you're looking for. Run your mouse over each selection to highlight a different selection set.
What Matt said. The second option worked for me.
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