Things can remain the place where you plan and complete tasks while a separate window method handles the cross-app surfaces used to perform them. The combination works only when each tool has one clear responsibility.
Start from the original Things item
Open the project, Today, or other Things list that contains the task. Things’ date lists are views of existing to-dos, so use the original item rather than copying it into another app. Read the title, notes, start date, and deadline, then identify the one next action you intend to perform.
Find the required material with Quick Find, Spotlight, app menus, or the native window overview. For example, a review task may require a source browser window, the current document, and a preview window. Confirm account and document identity before grouping them.
Hand off to the working windows
Use normal macOS switching when the set is small. When several projects reuse the same apps, associate the current windows with a project goal so you can return by outcome. Wallo can keep assigned windows and its own to-dos under a goal, but there is no Things integration and no direct relation between a specific Things item and a particular Wallo window.
Return completion to Things
After producing the result, save it, close disposable material, and mark the original Things to-do complete. Do not also maintain a duplicate Wallo to-do unless it represents a different commitment. If a working window closes, the resource may still exist; reopen it through its owning app rather than expecting a window organizer to restore the session.