Here you can define approving processes, that you can assign to folders. An approving process is a series of users and groups, every item has to follow the approving way of its folder.
Each approving level can have multiple approvers. To create a new approver, select the level, and use New approver or New approver group buttons.
To edit approving process properties, double click on its name.
Right click brings up a popup menu.
To edit an approving level, double click on it.
Related:
Approving list