Your customer has two pay components, with IDS SALARY_US SALARY_UK, that are used for employees'...

Create two different templates use eligibility rules to ensure employees appear on the correct one.

Ensure the Used for Comp Planning flag of the pay components is set to Comp do NOT map to a specific pay component ID in the worksheet.

Create two custom columns map each to the pay components. Use a third custom column to display whichever is non-zero.

Create a pay component group that includes both pay components use that for the planning.