Final answer:
The MSC IPP is open to Navy and Marine Corps active duty and reserves in paygrades E-5 to E-9, and the paygrade requirement cannot be waived.
Step-by-step explanation:
The MSC IPP is available to communities for members of the Regular Navy and Regular Marine Corps, and Naval Reserve and Marine Corps Reserve on active duty. This includes Full-Time Support (FTS), and Active Reserve (AR) serving in any rating or Military Occupational Specialty (MOS). Applicants must be in paygrades E-5 through E-9 at the time of application, and this paygrade requirement is not waiverable.