Poking around in Todoist helps I discovered they have a page dedicated to GTD tips! https://get.todoist.help/hc/en-us/articles/203799792-Getting-Things-Done-GTD-with-Todoist

One tip I really like: Organize your tasks from your Todoist Inbox into specific projects. Split complex tasks into more manageable action items using sub-tasks. Assign due dates, labels and priority levels for even better organization.