In most situations user and interface do not need to change, both of these are removed from our CONNECT Edition products.
Each project that you work on requires a project to be created to store the design data and project specific resources separately from other projects. In AECOsim one of the critical project specific resources is the Floor Manager DGNLIB, BB_FloorMaster.dgnlib.
Please take a look at ABD SS6 - QuickConfig which provides an example of configuring AECOsim and creating projects.