How to request access to fundation models in jumpstart - AI21labs

Hi,

I wonder how can i request access to Foundation models, specifically AI21 labs series, in Sagemaker JumpStart? I tried four different of regions including us-east-1 and 2. In AWS demos there are many AI21 Labs Foundation models listed in Jumpstart that apparently required to submit a request access and I wonder how can submit such a request?

Thank you