In the HPSCI outline it specifically notes the targeting of U.S. individual Carter Page was NOT a FISA Title VII search request. Title VII is FISA(702), the incidental collection of U.S. person information as it relates to National Security or Counterintelligence operations targeting foreign individuals.
The FISA warrant request, against Carter Page, was made October 21st, 2016, under Title I of the Foreign Intelligence Surveillance Act. Meaning the surveillance application was specifically stating, to the court, the U.S. individual was likely an actual agent of a foreign government, ie. a spy.
To give validity to the underlying position of the DOJ and FBI, the justice department used: the Clinton-Steele Dossier; media reports from -and of- the Clinton-Steele dossier; and opposition research provided by Clinton financed Fusion-GPS through Nellie Ohr, so they could monitor U.S. Person Carter Page.
In total, this sketchy assembly of political campaign research was used by the FBI as evidence to back-up their claim U.S. person Carter Page was working as a foreign agent; essentially saying: he was a spy. This application assembly was then certified on four different occasions by specific officials within the DOJ and FBI.
The FBI were not targeting Page incidentally as an outcome of foreign intelligence collection; the FBI was targeting Carter Page directly. AND as such they carried full surveillance authority upon all of this activities, interactions, communications and contacts therein.
Because of this direct approach, any group, organization or entity who came in contact with U.S. Person Carter Page was then open for ancillary review and FBI investigation. Those who engaged in contact with Carter Page became subject to surveillance and searches in the same manner as if Page was an actual foreign agent.