Hello,
During my studies and experience as engineer IT, I already modeled more than 100 business processes with Bizagi Modeler, and other software like ProcessMaker, Bonitasoft providing catchy and professional works.
So I can do this work for you, I inform you that I master all diagrams having relation with BPM (Business process model) such us private process, public process, collaboration and choreography ...Feel free please and contact , i assure that i can satisfy you completely and want to have a long term collaboration with you and i will be glad to offer you my services, i will send you samples of my closed work and we can negotiate everything you want.
Here you can see some previous similar work :
https://www.freelancer.com/projects/writing/Bizagi-Documentation-Standardization/proposals
https://www.freelancer.com/projects/word-processing/Document-Business-Processes/reviews
Best Regards!