From the cisco configuration guide;

Perform this task to enable the DHCPv6 relay agent function and specify relay destination addresses on an interface.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface type number

4. ipv6 dhcp relay destination ipv6-address [interface-type interface-number]

The problem is that i can't find the  'ipv6 dhcp relay'' command on packet tracer.

Therefore i would like to if it is possible to make a router acts as a relay agent on packet tracer?