It depends on the expert. My team and I have done everything from create a roadmap to fully run the crowdsource campaign.
The variations come in budget, product being launched, the client, and the appropriate audience.
I'd be happy to schedule a call with you to discuss more in detail.
That really depends on what you are looking for. As a crowdfunding expert myself, I have guided many individuals in running successful campaigns on both Kickstarter and Indiegogo. The people who are successful in crowdfunding are those that know the metrics to success and do the correct preparations prior to the launch of the project.