Hi Syed,
Yes, it is possible to change a SnapSync policy from the Delphix CLI interface. From the main interface, enter "policy" to navigate to the policy interface. From there, you can enter the command "select (policy name)" to view details regarding the SnapSync policy. You can modify policy details here. If you would like to modify the policy schedule, you can do so by performing the command "select scheduleList", then modifying the information in that interface.
I hope that's clear. Feel free to let me know if you need any clarification.
Thanks,
Srish