The percentage of management involvement will depend on whether it is a direct EB-5 or EB-5 Regional Center EB-5 project. Once conditional permanent residency is obtained you are required to spend the majority of your time in the U.S. That is,your home is in the U.S. and when you leaving for a foreign country you are only visiting.
If you invest in a Regional Center, the Regional Center will manage the project and you do not have to worry about the daily activities of the project and workers. If you invest in a direct investment, you will be responsible for managing the daily activities of the business. Once you receive conditional residency you are required to spend the majority of your time in the US to maintain your business.