Origin represents the scheme and the fully qualified domain (i.e. including the subdomain).
The CrUX Dashboard in Data Studio is based on a single Origin. It may be possible to create your own studio dashboard based on this data set (or by creating your own connector to the underlying BigQuery database), but I'm afraid that's beyond the support that we could provide here.
CrUX is a public dataset so is not linked to Google Search Console. GSC does also exposes CrUX data (in a slightly different form) in their Core Web Vitals reports which you will need access to GSC to see, but for the CrUX Dashboard, API or BigQuery tables no such access is required.
Thanks,