Why Does Parallels Want to Access Data from Other Applications?

Every time I start Parallels Desktop, it requests access to data from other applications? Every time, I hit Deny because I don't see any reason to provide this access and have had no issues running what I want to when denying the access. Can anybody tell me why Parallels Desktop needs this access? And why my choice of "Deny" is not persisted for future startups of Parallels?