No. All tasks are currently project-based, so to create a new task you need to create it within a specific project's Task Manager.
Workaround for general business tasks
Create a project specifically for general business tasks. From within that "General Business" project you can track the business to-dos that are not tied to a particular property.
Read the full article: Can I add a Task to the Workspace Tasks area that isn't associated with a specific Project?
