One-Click Upsells by FunnelKit provide you with a variety of offer-level customization options.
Here are the offer settings that you need to configure at the offer level in FunnelKit.

Furthermore, if you add subscriptions as your upsell offers, you'll see these settings:
- Subscription Discount - Enabling this option will apply the entered discount for all future subscription renewal recurring payments.
- SignUp Fee Discount - Checking this box will also apply the discount entered to the sign-up fees. Please note that the discount applies to the regular price only.
- Override Free Trial - Enable this option to offer a free trial for this subscription. You can enter the time period in the number of days, weeks, months, or years.

Here are a few more configurations available in the settings:
Click on each of these settings to go to the specific documentation.