Quotations/Sales Orders Approval

In Odoo Purchase module having levels of approval by default, this process is not in Quotation/Sale orders approval. After installing the Quotations/Sale Orders Approval Module levels of approval is possible, a button 'Ask for Approval' will appear on the Quotation screen. When user clicks on this button system will display the wizard for set approval reason and approval type, this will allocate approver for that quotation. The approver can confirm sale order from their login this moves the order state to Waiting For Approval. Before this process, we have to set user as an approver, in user screen sale approval tab will appear for set amount limit or discount percentage, based on this values approver is allocated for quotation.