pedgrp.dat
Firstly check the long and boring installation in the main readme, then move on to this one.
Find # POPCYCLE_GROUP_GOLF and add these models there:
F_Y_FF_RSCafe
M_Y_FF_RSCafe

Find # POPCYCLE_GROUP_FASHION and replace all models there with these:
F_Y_Doctor_01
M_M_doctor_01		
M_M_doc_scrubs_01

Scenarios.dat
Find and replace original lines with these:

HangOut_BoardGameWatcher		StartEnd(0, 24)		Task(Group) SetSpecificModel(M_Y_FF_Cluck_R) ForceModelLoad
HangOut_WatchBoardGame			StartEnd(0, 24)  	Task(Group) SetSpecificModel(M_Y_FF_WSPizza_R) ForceModelLoad
Scenario_DancingNightClub			StartEnd(0, 24)		Task(Group) SetSpecificModel(M_Y_FF_Burger_R) ForceModelLoad
Scenario_HospitalNurse   		StartEnd(0, 24)		Task(Group) SetSpecificPopcycleGroup(FASHION) ForceModelLoad
Scenario_HospitalDoctor			StartEnd(0, 24)		Task(Stationary) MaxInRange(1, 100) SetSpecificModel(M_M_Firechief) ForceModelLoad
Scenario_StripperDancing		StartEnd(0, 24)		Task(Stationary) SetSpecificModel(F_O_Maid_01) ForceModelLoad
Scenario_StripperLapdance		StartEnd(0, 24)		Task(Stationary) SetSpecificModel(M_M_HPorter_01) ForceModelLoad
Scenario_DrinkingAtBar			StartEnd(0, 24)		Task(Group) SetSpecificPopcycleGroup(GOLF) ForceModelLoad

Ambient.dat
I ain't going to explain this file, because there is a lot of stuff, and such an instruction is simply not enough, but I don't think that there is many mods that replace this file.

scenarios2.dat
Everything is at the end of the file, from #Majestic to #Pizza, simply copy all lines from there.