How to implement position Hierarchy for Document Approvals. ?

can you please provide an example of this process.how the below things are setup in the flow of apprvoals.

-- Employee Jobs
-- Approval Groups
-- Employee Positions
-- Approval Assignments

I have received some update from the other community i.e. :
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The employee must be opened .
Employee should be assigned to the User.
While opening employee Position and Job should be assigned to the employee.
The Job and position should be in the Position heriechy.
Approval Limits should be assigned
and Approval Groups should be made.
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Can you please provide me an screen shots of this setup in an attachment format as detailed(start to end point) .