(1) Applying: Early Entry is only for UNCC students. Application to the Early Entry program is discussed here: https://cci.uncc.edu/academics/computer-science/5-year-babs-ms-degree-program.
You apply to the CS MS program using the standard Graduate School application process. The process is completely on-line. The on-line application will ask you whether you are applying for Early Entry.
See also: How do I apply for admission?
(2) Early Entry Form - after you are admitted, you need to follow the procedure in FAQ item "How does "double counting" work in the Early Entry Program?"