How to establish units amount to an item?

How to establish units amount to an item?

I have several items (services) that use the same unit, but the amounts for each one is different

Example

Item 1: To Airport - Standard SUV
Unit: Standard SUV Service Hour
Unit Amount: 2

Item 2: Point to Point - Standard SUV
Unit: Standard SUV Service Hour
Unit Amount: 1

I would like for Zoho Books to recognize, as I fill out the Invoice (or Estimate), that if I put "To Airport - Standard SUV", the amount in the units would be "2"

Is that possible?

Best Regards,