I need help in switching back & forth from sheet to sheet and using
VlookUp
& Match to retrieve values at the intersect of current Row & Column.
.
For Each Cell in Sheet1 Range, do some Vlookup calculations from
Sheet3
and write results in Sheet2 same relative range.

Assume Range in Sheet1 is  B2:D3 as follows :
Row / Col       A           B           C       D
   1          Position    RateA    RateB  RateC ....
   2          Manager    10          8        12
   3          Cost Engr.   6         16         6
   4          ..............    ..          ..         ..
Assume RateTable in Sheet3 is  B2:D.. as follows :
Row / Col       A           B           C       D
   1          Position    RateA    RateB  RateC ....
   2          Manager    50          55        60
   3          Cost Engr. 35          40        45
   4          ..............   ..            ..         ..
For each Cell in Sheet1 range which contains Hours at specific Rate
Code,
Vlookup/Match RateTable in Sheet3 for  pertaining Position,
and write Hours multiplied by Rate in Sheet2 in same relative position
as in Sheet1
as follows :
Row / Col       A           B           C       D
   1          Position    RateA    RateB  RateC ....
   2          Manager    500        440     720
   3          Cost Engr. 210        640     270
------ Pseudo Code ------------------------
Sub Test()
Dim rng As Range
Dim RateCat As String ' Rate Category, RateA, RateB, RateC etc...
Dim Rate As Integer : Dim LastRow as Integer
Dim Position as String
LastRow = Cells(Rows.Count,"A").End(xlUp).Row
Set rng = Range("B2:D" & LastRow): Range("B2").Select
For Each Cell In rng
  'Vlookup/Match  Position and RateCat from Sheet3 and store value in
Rate
  ' Multiply Sheet1.ActiveCell.Value  with Rate and store result in
Sheet3,
  'same relative Row/Column
ActiveCell.Offset(0, 1).Select
Next Cell
End Sub

Help appreciated,
Celeste