Promotions go to the people who were already doing the next job before anyone asked.

Most people wait to be handed the bigger role and then act like it. It usually runs the other way. Whoever is already covering the gaps, closing up without being told, answering the question nobody assigned them, has quietly made the decision easy for the person choosing. The title arrives to describe what is already happening.

Pick one thing at your job or on your team that sits just past your list and start doing it this week. Not loudly, not with a speech about it. Just well enough that somebody notices it stopped being a problem.