How can we restrict write access to tickets that do not belong to a user?

E.g. XYZ company has A and B contacts

Ticket 1 - Created by A

Ticket 2 - Created by B

Either A or B can Read-Only all the tickets created under XYZ company, only ticket owner/creator has "Close Ticket" rights to his/her own ticket.

Is there such a feature in Zoho Desk Professional edition now?

Thank you

Maureen