Add Approver and Reviewer..

Hello Friends,

I am not able to add approver or reviewer when my n-step workflow badi gets trigger at the same time i am able to add approver or reviewer if without approver workflow gets trigger..

Add approver and reviewer buttons are disable if the cart create from n-step workflow conditions..

Is this standard functionality if n-step workflow trigger then both fields needs to be disable..

Can you please give me some more details about how the add approver and reviewer concept is working..