MSA 2050 linear config

Hi guys, 

How are you?

I´m configuring a new MSA 2050 but I´m having problems creating the pools. It´s simple, I have 2 x SSD disks and 6 x 1.2 TB SAS. 

The objective is to create 2 RAIDs: Raid 1 with SSD and Raid 5 with SAS disks but I can´t because the MSA says that I need a license... (performance Tier License).

I don´t need to create a singles pool with both types of disks, etc I only need to create 2 separate RAIDs.

I´ve been reading that I can do this with linear configuration but When I´m creating a pool I cannot see this option. 

How Can I enable  / configure this 2 independent RAIDs?

Thanks a lot for your help.