SAP LT (SLT) User Role assignment

Hi Guru,

We have just installed the DMIS and SHC_CONT add-on components on Solution Manager 7.2 and activate all necessary services. When I tried to launch the SAP LT Work Center (LTR tcode), I received an error messages below:

The user menu tree for user "TestUser" is empty. Please contact your system administrator.

To close the window, please click here.

Is there a specific roles need to be added to TestUser? Thank you in advance, David