Hi Guys,
I want to add a approval system in the model driven app, technically in the business process flow.

So when a user click "Next stage", it will send an approval to certain approvers. Until approver approved the approval, it will move to next stage. Otherwise it just freeze in the current stage.
Currently it seems, if user click next stage, and it will move to next stage directly. Is there anyway to solve it?
Thanks in advance. Much appreciated.
Cheers,
Anthony