How to resize rviz obstacle and pedestrian agent size?

[zerosansan]

Installation on ROS Melodic was successful and I managed to run all of the launch files. Is there a way to properly resize the obstacle (walls) and pedestrian agent size from the simulator's side? I can resize the walls and obstacles from Gazebo but the agents are floating around while moving.

rviz:

Gazebo:

[zerosansan]

I found the file responsible for the Z-axis offset. So, I set it to 0.0 and that fixed the floating pedestrian problem in Gazebo.

https://github.com/srl-freiburg/pedsim_ros/blob/master/pedsim_gazebo_plugin/src/actor_poses_plugin.cpp#L101

const float MODEL_OFFSET = 0.75;

However, pedestrian agent and obstacle wall size need to be adjusted somehow. The agents are only moving within less than 2m x 2m space out of the entire 3m x 3m available space due to the large obstacle size and limited space from the thick 1x1m wall blocks.