Typically, the sponsor of the conference screens applicants who want to present their companies funding needs. The applicants who pass the screening then describe their opportunity in short oral presentations to an audience of investors.
Interested investors can follow up with the entrepreneurs later in the conference.
The best sources of information about upcoming venture capital conferences are local accounting or law firms, which may cosponsor them, local venture firms, which may participate as plan screeners, and local colleges and universities with entrepreneurship courses, which may provide professors as speakers.