Help me to find Function Module for ABAP PUBLIC logon group..

Hi all,

i am a java developer.I have no idea with the SAP function modules.Can anybody help me out to find the function module that creates the public ABAPlogon group .

I have to do a task which is as mentioned below:

Our BI configuration assumes that an ABAP logon group with the name “PUBLIC” exists. However,after A1S installation no such logon group is present. So, my task is to find out, how we can create such a logon group (this means finding the right ABAP Function Module or BAPI)

Kindly reply as soon as possible

Thanks and Regards

Neeta