Currently, PreOrder Now (PON) does not support setting up partial payments for all products at once. This feature must be applied on a per-product basis.
While we understand the desire to streamline this process, applying partial payments across an entire store could cause performance issues, such as crashes or loading delays, especially for stores with many products.
We are actively working on implementing this feature in a future update. In the meantime, if you need assistance with other features, feel free to reach out to our support team—we're here to help!