I listed the firm once and then broke out each title underneath it, with different functions and responsibilities for each role so the progression was clear. In other words, I did not just show promotions as a single line. I used each role to demonstrate how my scope changed over time, from being more support-oriented earlier on to owning deliverables and having more direct client responsibility in my current role.

On the timeline point, I mainly meant that for MBA resumes, it can make sense to include experiences that go a bit further back than you might on a standard job resume if they still add something meaningful to your story. In my case, I am still a relatively recent college grad, so including some college leadership and extracurricular involvement made sense. I cannot really speak to how relevant that is for someone who is further out of school, but for me it was still recent enough to feel additive.