You select which users must approve a stage in a request:
Any Group––Any user from an assigned node access group may approve the request in order to advance it to the next workflow stage. The node access group must be assigned to the hierarchy with access to the current stage type or greater. If none of the assigned access groups to the stage have proper data access to the request items in the request, the stage may be skipped as long as required values are provided and validations pass for all request items.
All Groups––At least one user from all assigned node access groups must approve the request before it advances to the next stage. If none of the assigned access groups to the stage have proper data access to the request items in the request, the request is escalated to Data Managers for resolution.