Hi Krishna,
Please perform the below IMG-configuration to book the participants from Participation Menu/Learner Portal
Integration Switch's:
Integrate Microsoft Outlook Calendar : R3CAL CALIN - Value 2 , R3CAL EMID - Value(sendr email id)
Time Management : PLOGI TIME - Value 1
Activity Allocation : SEMIN LNLV - Value 1
Regards,
Anbu.N