How to stop a multi-stage campaign?
Pause a sequence Resume a sequence Avoid a sequence to be sent
Head to the sequence menu in your dashboard and under the Actions, deactivate the sequence you used for the multi-stage campaign.
Note that this does not apply to the 1st stage of your sequence.

While inactive, the days you set in a sequence are still counted. When re-activated the sequence will resume as initially planned.
To automatically pause the flow of a multi-stage campaign during the weekend, see here.
How did we do?
Why my campaign is not sent to all contacts?
How to export my Google contacts to a CSV file