A private budget is intended to be used for your private travel or your commute trips from home to work.
If your company also allows business trips with Skipr, you can pay for these with your business budget.
When you pay for an expense in the app, you can always indicate which type of expense you are making (if you have both budgets).
By default, all payments made by card are considered as being private ones. If the expense was professional you can always adapt this in your dashboard afterwards.
Simply click on the expense, and mark it as it should be.