Case study · Agency group with four billing entities
A mid-size creative group in Korea ran separate materiality for each legal entity even though creative hours crossed entities weekly. After the flagship course, the team set a group overall materiality anchored to combined fee revenue, then documented entity-level performance materiality with explicit qualitative notes for related-party recharges.
Outcome after one reporting cycle: fewer late adjustments when intercompany creative time was corrected, and a cleaner EQCR trail. Limitation they still own: their timekeeping export remains noisy, so sampling precision depends on manual cleansing outside the course scope.