I decided to approach this, not from the perspective of the previous question that sparked this one, but from a more creative, brainstorming approach, with sympathy for the perspective of the person whose job is Resource Manager today, facing an organizational move to Agile, and wondering "what's my job supposed to be then?"

I'm also explicitly _not_ using Agile as a synonym for scrum. There _are_ other frameworks! ;)

So what _might_ a Resource Manager do in an agile organization? 

First of all, I don't think they are part of an agile team. I think this is an organizational role that is outside the teams. 

Perhaps they become a traditional people manager, supporting the career growth of their direct reports, including training.

But I think a better fit would be to have a Resource Manager taking a broad view across multiple agile teams. In agile, the "resource" is more fundamentally the _team_ than the individual.

They would be the person responsible for solving problems like "we don't have all the skills we need in the team", whether by adding team members or arranging for training, and "there are 5 teams but only 3 DBAs, what do we do".

They might be responsible for figuring out which projects should go to which teams, matching strengths to project needs. They might be responsible for deciding whether, when, and how to mix up the teams.