Shopacado ‑ Volume Discounts

I am looking for an app with specific discount - 25% off 1 line item in the shopping cart with a specific discount code. I did not find a way to do this with this app (at least in the short time I played around with the settings). Support was helpful in setting up my stores theme and showing me how discounts would look in my store. This was helpful to visualize how customers will see discounts presented. Would definitely use this app if I can make the particular discount I'm looking for work.