Exclude product from recurring totals for X months (Promotional pricing support)

Support a promotional pricing for recurring products (e.g. licenses or services). The idea is to exclude a product from the recurring monthly total for a configurable number of months allowing promotional or free periods to be clearly reflected in customer quotes and PSA systems.

We're actively gathering feedback from users to shape this feature and ensure it covers real-world use cases. We’d love your input on the following:

1. Quote Display: How should recurring pricing be shown in proposals?
2. PSA Integration: How do you currently reflect these promotions in your PSA system?

Please upvote if you need it and add use cases and how data is represented in YOUR PSA !.

Jira: TN-6896