UX / UI - Configure all layouts at once

For efficiency purpose we want to let users configure all layouts

• for a given doctype
• for all tasks of a given workflow
• for the form and results layouts of a page provider
  at once.

Ideally we could do that directly from Modeler to avoid back and forth config.
It could also make sense to allow generating on an even larger scale, for a wider selection of various features.

Potential limitation is performances and ability to trigger this from server side (currently handled client side only)

We need a UX / UI for this. Current behavior attached.