Oracle Sourcing and iSupplier portal

Hello Gurus,

We already have oracle iSupplier portal installed.

We are implementing Oracle Sourcing now.

I understand that suppliers use the same login which they use for isupplier portal for sourcing as well.If it is the same person from supplier who is going doing both the tasks.

Say the supplier is a small company with only 1 employee and then when the supplier logs into our iSupplier portal, the supplier will find two responsibilities one for sourcing and one for iSupplier and the supplier can do both the jobs.

Am i correct ?

Any pointers or documentation will be useful.

Thanks,