The mass model is created automatically in accordance with Codes.
Live Load Reduction Coefficient is defined by user. Necessary arrangements can be made in the story settings LLR section.
İnternational Design Codes
ASCE 7-16 : Effective Seismic Weight per ASCE 7-16 §12.7.2
TSC 2018 : Mass Definition in Structural Modelling
Live load reduction coefficient can be determined for every each story from story settings in accordance with Codes.