How to download a small of subset of single-cell multiomics (RNA/ATAC) of a small brain region?

Hi all,

I am trying to download a small subset of single-cell multiomics but have difficult to find out how after reading related paper and navigate this website. Would you please have a guidance? I went to https://knowledge.brain-map.org/ and select 10X Genomics Multiome but seems I still can’t download. Thank you so much.