Interactive walkthrough, captured from the company’s help desk (originally an embedded Tango guide), reconstructed step by step:

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3This will give you further control over your campaign.
This will give you further control over your campaign.
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6This can be set to a daily budget or a lifetime budget.
This can be set to a daily budget or a lifetime budget.
7This will take you to the Ad group settings
This will take you to the Ad group settings