Dear Sir .
I am new joined in the forms and first time writing, please can any one help me out in below problem

1) How I should model joint –A ( ref Fig. ecnlsoed ), w.r.t to the column height above roof top and beam size.
2) Do I can considered beam as a simple supported or any partly moment release can be accounted if yes, how to calculate it.

Note: The size are in mm