2.5.3. Section 3: Capability Requirements (CR) and Gaps/Overlaps. Same as the regular ICD with the addition of the Net-Ready performance attribute table. Reference Figure B-2 and describe each attribute in terms of initial minimum values rather than threshold and objective values.

For reference or comparison, below is what the JCIDS Manual says for the ICD 2021 itself:

2.5.4.2.1. Operational Activity. This is what the capability must do or perform to satisfy one or more tasks. Although not limited to, the operational activities should be described in the lexicon of the UJTs or DoD Component equivalents.