Do user_attributes need to be mapped manually?

[Ekansh]

I’m trying to embed (SSO embedding) a Looker dashboard in an application that will be accessed by my external partners to view data regarding their performance. I want the external partner to be able to view data for just their Partner ID and no one else’s Partner ID. I came across user_attributes and access_filters, but I’m a little confused. From what I read and tried out, I need to manually do a mapping for all my external partners and their Partner IDs in user_attributes. Is there any way to do this dynamically on the fly?