BW security profiles for BPC

Hello,

I was hoping someone can provide some more details on the BW rolls listed below and how they are used for BPC as well as their impact on user in the BPC/EPM frontend security settings/profiles.  If I am missing any it would be appreciated if you could list them and provide similar details as well

1./POA/BUI_FLEX_CLIENT

2./POA/BUI_UM_USER

3./POA/CLM_BPC_USER

4.SAP_BPC_BTCH_JOB

5.SAP_BPC_CLM_EXPORT

6.SAP_BPC_CLM_IMPORT

7.SAP_BPC_SYSADMIN

Thanks,

Keith