Multilevel Approval Work flow

I am having problem with following issue

i work around to find solution but i couldbt get the concrete solution

i want to impelemt following process for custom list

• When Item added in list

 

1. Edit item disable for employee and president and enable for superior.
2. Task will be create for superior to approve/reject list item

 

1. IF  Superior approve task after checking list item
1. Task will be created for president to approve/ reject list item
1. Edit Item Will be disable for superior and enable for president

• IF President approve task after checking list item

• Workflow will be complete

• Edit Item will be disable for        

                    Employee/superior/president

• IF task = reject by president

• Edit Item will be disable for president and enable for superior.
• Step 2) will be process.

 

2. IF Superior reject task after checking list item
1. Task will be created for Employee  to approve/ reject list item
2. Edit Item Will be disable for superior and president
1. IF Task = approved by Employee
2. Step 1) will be process

Please give me solution if anyone knwo about it in detail explination !!

Thanks & Regards,
Dipti Chhatrapati