How do I map 'contractors'?

In ‘Activity data’ (step 5), there is a separate section where you have to provide Full Time Employee (FTE) details. If contractors are already included in your FTE headcount and you have accounted for their commuting and/or business travel emissions, you can exclude them during expense mapping (in step 4) by selecting ‘Exclude- Contractors included in staff headcount’ from the dropdown, to prevent double counting of emissions.
In case the contractors are not a part of your FTEs, they can be mapped to the category 'Labour supply and contractors' under Purchased Goods and Services.