SAP BPC Embedded - Concurrent users

Dear all

Can you please let me know of your experience in S4 optimized BPC while we have,

1. Concurrent users trying to plan for the same data combination.

2. Concurrent users working on different data combinations.

Do we get any error in case of Pt.1 and how is the performance in case of Pt.2.

Request you to share your experience.

Thanks

Deepika