Minimum shipping rate

Hello, I want to have a minimum shipping cost (€2), independently of the weight.
My items are weighing 0,5kg. the cost per kg is €1.6. But there is a minimum fee of €2 regardless. So if a customer buys only one or two items he should be charged €2 and not €0.8 or €1.6.

Thanks in advance!

https://www.ads-software.com/plugins/awd-weightcountry-shipping/