In all of the Campaign Reports, you'll find a button appearing when you select a level of a campaign (either the full campaign, and ad set or an ad.

Clicking this button will open a new window to show you all of the actions that happened from the creation of your campaign, until now, to the entity you chose: 

You can then filter for the entity name:

The level:

Or the Action:

You can also filter by the "Actor" name, which will display the name of the person who did the action. 

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