Watch below quick start video, or you can follow the manual here
Cristie, Verina, and Sam Conrad Joyce. "GHShot: 3D Design Versioning for Learning and Collaboration in the Web." Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing Systems. ACM.
Cristie, V. and Joyce, S.C.: 2017, Capturing And Visualising Parametric Design Flow Through Interactive Web Versioning Snapshots, Proceedings of International Association for Shell and Spatial Structures Symposium.