Hallo, I am reading Section 6.2.7 ASHRAE 62.1-2010, and it is not clear to me if the building needs to install DCV. In case this is mandatory, is it required for every tenant?

Verbatim from the Standard:
6.2.7. Dynamic Reset. The system may be designed to reset the outdoor air intake flow and/or space or ventilation zone airflow as operating conditions change.
6.2.7.1 DCV
6.2.7.1.1 DCV shall be permitted as an optional means of dynamic reset.