While utilizing composite beam construction, if a moment connection is created using reinforcing steel in the concrete slab and a bottom flange plate and the bottom flange plate is not connected until after the concrete reaches design strength, is there a way to model this load combination in RAM SS's frame module and steel design?
There is nothing quite like that in RAM SS, but there are some features that you might use and some cautions.
First off, in the Ram Frame analysis, composite action is not considered. The stiffness of the beam is just based on the bare steel beam. See our analysis types article for details.
You can assign partial fixity to the beam end condition using Assign - Beam - Connection types within Ram Frame analysis mode. You just can't make fixity conditional on specific load cases.
There is an old feature we put in for designing columns in Type II partially restrained moment connection structures in the Ram Frame - Steel provisions mode called Criteria - Column moments. The purpose of this tool is to allow users to assume full fixity in the analysis, but then design the steel frame columns for some or none of the moments that result from gravity load cases. If the situation above is critical to column design that might help, but it won't do anything for the beam design issue.