If you want to archive past campaigns that are no longer active, you can easily archive through your Campaign Settings.
To archive your campaign, follow the steps below:
Step 1: Under Campaigns, select the Settings icon of the campaign you wish to archive.
Step 2: From the left navigation, select Administration. Then select Archive Campaign, and Confirm.
Your archived campaign will now be removed from the All Campaigns group in the Campaign list. You can find your Archived campaigns under the Archived Campaigns group.
Archiving campaigns will automatically take them offline.
Learn more about how to group and default campaigns.