ACM Categories and Subject Descriptors

This link contains information on what to write in the Categories and Subject Descriptors section of ACM papers. The sections are separated into a tree like structure.

For my stuff, I would write the following in latex:
\category{D.4.6}{Operating Systems}{Security and Protection}[Access Control]
\category{K.6.5}{Management of Computing and Information Systems} {Security and Protection}

This would turn out like:
D.4.6 [Operating Systems]: Security and Protection — Access Control ; K.6.5 [Management of Computing and Information Systems]: Security and Protection

Exact output would depend on which template you use.