Following up on the subject line, I'd like to ask if it's possible to schedule a campaign to automatically begin after the completion of the previous one.
Currently there's no way to automatically do this, sorry.
You could set an autoresponder and set the trigger to be after another campaign has been sent, and start the autoresponder, this way the AR will send right after the original one sends to subscribers, it's just they will work in the same time, the AR will not wait for the first campaign to finish.
You can use Advanced Recurring this will duplicate last sent campaign and you can set time when this will be sent also the maximum runs (how many times this campaign will be re-created).