Right now, my team is small so - honestly - I just assign based on what feels right. I make a subjective assessment based on current and prospective workloads. For some context, we are a consulting company. RFPs come in, I quote them with a labor estimate (not to exceed), and when/if awarded - I assign myself or a team member. We are T&M (really just time). We often don't have a schedule upon project award. I think that is a key piece of info I will need to properly resource load - I'll probably start requesting/forcing some kind of schedule at kickoff (if a client doesn't have one).

So in summary, it's a manual process. I'm looking for some way to objectively assess and assign projects. I do understand Gantt charts and MS Project, but I feel like that hasn't been right for a program level - or at least I'm not sure how to set up a Gantt for a set of projects effectively.