How can I Set the Dedicated IP as a Shared IP for one Reseller Accouont ?

Solution :

To deallcoate the dedicate IP of the reseller account. You need to change the IP of that reseller account to the shared IP address.

Go to the path,

Manage Reseller’s IP Delegation  >> select the reseller username  >> Submit >> Open Delegation>> Select the shared  IP >> Save

then go to the path ,

Manage Reseller’s Shared IP >> select the reseller username >> Submit >> Choose the shared IP allocated for the reseller account >> Save

At last go to the option Change Multiple Sites’ IP Addresses  and select the server shared IP address and click save

Reason : 

If you dont have the reseller account in your dedicated server then it is not possible to use this option .

It is same for the option Manage Reseller’s IP Delegation . Without the reseller account in the server it is not possible to use these options.