Two step approval for process models

Hello,

Given our Process Governance Model, each process has to be approved by two people:

1. Content, this is mainly the Business SME who will validate business rules and process flow itself
2. Process Architecture Compliance, this is a Process Architect that ensures the process complies with Naming Conventions, Process modeling guidelines and taxonomy to the Process Classification Framework 

Although, ARIS can use only one person to request a Process Approval (Process Owner attribute for the Process Model). 

Has anyone else encountered something like this? We you able to create and/or customize the approval process to become "two-step" ?

Thanks

Francisco