Navpoint encounters with multiple patrols

By David of the Outer Rim, in Star Wars: Outer Rim

Hello there, how do you handle situation when some player goes for encounter with navpoint card while having multiple patrols on the same Navpoint (all neutral or positive reputation of course)? My playgroup finds some situations ambiguous. E.g. card n.8 lets you gain reputation with faction whos patrol is on the same field. Should the player choose one of the patrols, or maybe all of them? I could not find anything that would resolve this question in the rules. Maybe it is clear in original English wording, but I have localized version of the game...

This should help.