copy specific columns from variable sheet names to specific sheet tab

I have a workbook with several sheets , my concern is sheet master and workings

Both have headers in common but differs in column position

that is header on master sheet is to be copied to workings sheet columns from B TO D which has same headers and so on .

Some headers need not to be copied from Master and Workings , however my issue that the workbook I recieved all do not have the sheet tab master, but workings tab always exist with same header columns.

The master sheet alternate name can be named invoicing or Teu No or other but have always same headers

So an imput box to select sheet and copy to workings sheet as expected results attachement.

http://www.ozgrid.com/forum/showthread.php?t=202531