Field reference for Expense report templates

 Hi Folks,

Could some one explain me the following field references in Payables.

1. Assign Card expense types

2. Justification required

3. Require receipt for

4. Cash require  Receipt above

5. Number of duplicates allowed

6. Viewable from all templates

7. Calculate amount

8. Apply Receipt rules to negative expense lines

9. Credit card receipt require above

10. Policy schedule

11. Data capture rule

Please explain each field functionality with suitable example.