When I was working on a project in its early stages of development, I worked with the Lead Architect to go through different design options together. This was done by either sketching different designs or producing fast models in Revit.
For some projects, I was tasked with producing high level presentation drawings/renders for competitions, which would often go through the different iterations with the Director to make sure they were good enough for KSS Architects to sell. This also included making a detailed walkthrough video for a secondary school that we were bidding for.
As I was usually on more than one project at a time, I would split my week up so that I could balance the workload between them. I occasionally sat in the meetings that the architects had with different contractors, and I was tasked with note taking and asking questions based on the area I was working on.