Custom Excel Navigation Macro

I maintain a production workbook in Excel 365 and need a small VBA routine that changes how the cursor moves in two adjacent columns on every sheet. • In the first of those columns, pressing Tab or Enter should move the active cell one row down and one column to the left... (Budget: $30 - $250 USD, Jobs: Data Processing, Excel, Excel Macros, Excel VBA, Visual Basic, Visual Basic for Apps)