Hi so far i cannot find guidance around how to use project web app for multiple teams, each wanting/needing to manage their own projects.
Would one normally go to Shapoint Admin and setup a new site collection with pwa for each team, or can it be done with a single "PWA" in a site collection, and then have different "sites" for each team that want to manage their own projects?
Using the Project Server permission mode you can then design your security model in a way, that each team only sees its own projects.
There are several PROs and CONs for both options.
A guideline could be, if you need interaction between those teams on some of the projects or if they really are completely separated. Also if you need to consolidate information accross teams might be a factor.