You can edit the name of the campaign, the market and time zone, the webhook or CRM integration and give or take away access to users in your account. Once finished, click "update campaign."
Archiving a Campaign
Still within "SMS campaigns" from the menu, click on the 3 dots next to the campaign and click "archive" (shown in the image below).
Confirm that you'd like to archive it by checking the box and clicking "yes".
If you ever need to find any of your "active", "archived" or "completed" campaigns, filter the campaign (shown in the image below).