$$ Extend the "EmployeeData" table with an additional column for lookup parameter variations.

a$)$ Modify the VLOOKUP scenario from the fundamentals by incorporating the IFERROR function.

b$)$ Utilize VLOOKUP in conjunction with the MATCH function to dynamically locate and retrieve data from the extended "EmployeeData" table. Create a scenario where the column index is variable based on a user$-$inputted parameter, such as the month.

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