Assign Tasks in Ticket to Customer / Contact

Assign Tasks in Ticket to Customer / Contact

Hi,
as i learned from ZOHO Desk support it is not possible to assign a task within a ticket back to the Customer/Contact...

Does anyone have the same requirement and did a workaround.

We sometimes need to request additional material from a customer, or he/she should upload something to help us solving the issue. This should be integrated in the ticketing process somehow
i tried to do it with comments in ticket, but in this case, the customer / contact does not get an information, so it is not useable.

Thank you
kind regards
Lambert