Load balance for HTTP Connection to ABAP System (Type H) RFC connection

Experts,
For proxy we are using HTTP Connection to ABAP System (Connection type H) RFC connection in PI to get connected to ECC. I only see the option to use Target host in the Target system settings than Load balance option. In general ABAP Connection (Connection type 3) has Load balancing status option in Target system settings.
My requirement is I should use a logon group with the message server when PI connects to ECC. How can we achieve this? At the moment I can only use the Central Instance or any dialog server (App server) in RFC but not a logon group.
Thanks in advance.
Mahesh

Hi Naga
Could you check the link below?
http://help.sap.com/saphelp_nwmobile71/helpdata/en/47/c5935087b62d66e10000000a42189c/content.htm
https://service.sap.com/sap/support/notes/1040325

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