Do single candidate Super Pacs need that candidate's permission to form?

[bluewater]

7. "but the FEC has been exceedingly lenient in defining what constitutes coordination"

Can candidates have super PACs?

Officially no. But it's easy to understand why it sometimes can seem as though they do. Although a candidate cannot coordinate expenditures with a super PAC (tell the PAC where an ad might be placed, whether the ad should be positive or negative, or what voters canvassers should contact), there's no law that says a candidate can't have connections with a the entities backing his or her election. Many super PACs — such as the one supporting Romney, the pro-Newt Gingrich Winning Our Future, and Priorities USA, which backs President Obama — are run by former top aides of the candidates. And candidates can headline fundraisers for the super PACs that are supporting them (as Romney has) so long as they don't ask for donations beyond the legal limits permitted for their own campaign committees. Donors are free to write larger checks and super PAC staffers are free to ask for them, but as long as the candidate abides by federal campaign limits or doesn’t actually ask for funds. it’s all kosher. Bottom line: There's a legal prohibition against candidates' coordinating with super PACs but the FEC has been exceedingly lenient in defining what constitutes coordination, as University of California law professor Rick Hasen pithily outlines in his Election Law Blog.

What can super PACs do with their money?

Anything except contribute directly to, or coordinate expenditures with, candidates and candidate committees. They can pay for any typical political expenditure, and then some. Super PACs can and do pay for television ads, phone banks, canvassers and bumper stickers. In other words, they can act as a shadow campaign.

https://sunlightfoundation.com/2012/01/31/nine-things-you-need-know-about-super-pacs/