Create a dedicated New User form. The existing process makes it difficult to add singular adhoc users (since there is no good LDAP / SAML provisioning process yet).
Example: Bob Smith starts today
Add to our SAML IDP
Then in KnowBe4 go to Import users and put in firstname.lastname@example.org
Then go to users and Search for Smith
Then edit the user to set the Firstname and Lastname (and possibly other attributes)
There should just be a New User form that allows me to completely populate a new user in one place.