Column boundary conditions are set in RISAFloor per the Splice Type that you have set in the Columns spreadsheet.

In RISA-3D, there are numerous options for Member End Releases which should not be confused with Boundary Conditions.

In RISA-3D, you can define a boundary condition as Fixed, reaction will be calculated or Fixed, reaction will NOT be calculated.

RISA-3D has a tool that allows you to calculate story drifts for each floor in your structure. To do this, simply define joints in the Boundary Conditions spreadsheet as story levels.