ooooh i see now
@cherrystark i feel your pain, everyone's mentioning huge casts here and i never would've said this was a problem before now because hell, I read malazan and that's a huge goddamn cast, but today i read a novel (not one of you lot on tapas) and i was drowning in like thirty family names with no description of them or explicit explanation of their place within the family, and it makes for a hard read.
So in this I agree with @nostalgicroxas - I have two coworkers of my MC named in the first chapter, and honestly, they aren't coming back but how stupid would it be if he was like 'this coworker of mine said'.
If you at least explain who the person is, there's dialogue interaction, and a visible point in their appearance, I think you're probably good to go!