how to know or mark if I have read a shared note after its last modification

[M. MG 0]

I am a rather new user (few months) of evernote business, though quite frequent.

Sorry if there is already a post on this, but could not find it.

[Arthur Ramos Schaefer 14]

Well, I haven't seen any way to do this. 

You can take a look at the modification time to see if there is any latest update on the Note, but we don't have any feature to mark a note as read.