You can try this:
1. schedule a full backup with "daily" management group each 24 hours, set this backup "retain up-to-minute restore ability for other management groups" to true.
2. schedule another full backup with "hourly"(normal) management group each every x hours but only retain 24 hours, set this backup "retain up-to-minute restore ability for other management groups" to false.
Notice FRP backup does not delete any backup itself, it is full backup which manages FRP backup retention.
Regards,
-Qing