You can't, as there doesn't seem to be one (yet?).
You have 3 options:
1) Get the free Studio One Prime, which is heavily limited but should be enough to at least get a feel for the DAW:
https://shop.presonus.com/Studio-One-5-Prime
https://www.presonus.com/products/Studi ... e-versions
2) Get Presonus Sphere for a month for $15, to gain access to everything Presonus makes, incl. full Professional version of S1
https://www.presonus.com/products/PreSonus-Sphere
3) Get a 3-day free trial at Splice and - if you like it - buy it for $17/month over 24 months
https://splice.com/daws/38892279-studio ... y-presonus