IBP role of local demand user

Hello,

I don't understand the concept if roles and permission filter in IBP. Is it possible, that you can explain me on an determine example, how I can maintained the business catalog and the permission filter ?

I have a user "LOCALDEMAND" This user should only work of one plannig Area called UNIORI and should only work with product IBP-200

What is necessary to maintain for this user ?

thanks in advance

Oliver