Right!
CR is required only for Project Management Plan and it's Components.
Refer Table 4-1 of PMBOK. All 18 Project Management Plan's component , after approval, need CR for modification. The 33 documents mentioned in same table do not need CR.
EEF by definition itself may be outside the authority of Project Manager and/or various stakeholders and hence, of course outside the authority of CCB too.
OPAs also dont need CR.
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