Add custom support panels and set back panel offset and grooving
Add a support panel with its own core material, finish and label, and configure the back panel offset and grooving depth in the extension parameters.
To add a support panel, insert a custom horizontal panel, set its core material and finish, and give it a custom label describing its purpose.
For back panel construction, the offset and grooving depth are configurable in the extension parameters.
If the required grooving differs from the default (for example 6 mm instead of 5 mm), change it there.