Settings are layered so one quick change to a single campaign can never accidentally reshape the whole account.
Set things once at the client level - targets, brand handling, brand terms, service area and the flag-for-negative list, and every campaign beneath it inherits them (shown with an inherited badge).
When a campaign needs different treatment, override just that campaign. The override affects only that campaign; the rest keep following the client default.
Changed your mind? Reset to client default drops the override and the campaign goes back to inheriting.
Open the campaign's settings.
Find the setting and choose Override for this campaign.
Set the campaign-specific value and save. (To revert later, choose Reset to client default.)
RELATED ARTICLES
Client settings
Targets, brand handling, brand terms, service area and flagged words - set once.
Campaign settings
Cadence, target overrides, automation mode and connected lists.