Reduce a single panel's length using panel-level extension

Shorten one specific panel by setting a negative extension on it at panel level in a construction style.

1. Create or use a construction style.

   ✓ Checked in the product on 10 October 2026

2. At panel level set a negative extension on that specific panel (e.g. minus 5 mm).

   ✓ Checked in the product on 10 October 2026