See “Make public” link in web app:
Hi @Martin_Froehlich and welcome to the Forum!!
You’re completely right, as it stands, it is not possible to make public, tasks created from your My Tasks on Mobile; hopefully this is something our team will be able to implement in the future! In the meantime, one workaround would be to add tasks you want to make public to a Public Project; this should allow to you to achieve what you’re looking for!
Do you have any update on this? It’s frustrating my team as well that we can’t make tasks public for the whole team to see, when they don’t need to add to a project.