[quote=@Andreyich]
[@Leidenschaft]
Since I'm a bit of an idiot, am I still looking out for suspicious people/guard duty as per start of the post or do I follow the rest of the team? 
[/quote]

It is implied that Ben and Victor were 'assigned' to look out for suspicious people entering or leaving. You may opt to follow the rest of the team into the apartment section of the building, follow an investigating character, or ask around the lobby for any leads. Det. Albright is the one with most of the information pertaining to the specifics of the case, which isn't much.