Replacing single elements in list

Question

So, I am currently doing an exercise where I have a list of employees, with the data type Employee.

data Employee = Employee Name Age Salary deriving (Show)

employees :: [Employee]
employees =
  [ Employee "Alice" 28 50000.0,
    Employee "Bob" 35 60000.0,
    Employee "Charlie" 42 75000.0,
    Employee "David" 30 55000.0,
    Employee "Eva" 25 48000.0
  ]

I am supposed to write a function mapEmployee :: (Name -> Name) -> (Age -> Age) -> (Salary -> Salary) -> Employee -> Employee with the form mapEmployee n a s e = (function) that can replace the name, age and salary of a given entry.

We are supposed to use 3 functions for this, so I take it that I should write 3 helper functions that I then use in mapEmployee.

As a prior part of the exercise, I already defined functions getName, getAge and getSalary, which alll follow this shape:

getName :: Employee -> Name
getName (Employee n _ _) = n

However, I don't understand functional programming enough to make the connection of how to use them in this context. I have thought about using a filter-function to look for an index number and simply replace the whole Employee-type entry, instead of trying to alter single values within Employee-records, however I have had no success in trying to filter for the index yet, let alone replace the name, age or salary once I get this far.