Hello Anshita,
To have CRM Interaction Center runs smoothly, IC business role should be set up correctly. You can refer to KBA 1836437.
CRM IC also provide multisession functionality. You can have a look at KBA 1945312 and Note 1597836.
You can also have a look at SAP Note 2039600 which talks about the new feature of L-Shape.
Thanks and regards
Abby