The activity timeline is the overview of your current and historical media investments and the correlating effects of those. It can be found under the "Media Insights" menu.
You can navigate the timeline in the following ways:
1. Use the date picker in the top left corner of the timeline. Here you can select default periods (Today, This quarter and This year), a custom period or jump to specific activity periods of previously activated campaigns.
2. Use the step left/right buttons at each end of the timeline or zoom in/out buttons in the middle of the timeline view: