Published Definitions
Published Definitions is accessed via Web Terminal -> Published Host Definitions in the Management Console.

Publish a Host Definition to the Web Terminal
If a Host Definition must appear in the user-facing Web Terminal, the Host Definition must be marked as "Available in Web Terminal".
By checking the "Available in the Web Terminal" and pressing the save icon at the end of that definition's row, that definition will become instantly available to users of the Web Terminal.
Auto LU
If the LU Name or Device ID of a session must be set automatically based on a value presented in the Claims of the user's federated identity, the Claim Type can be set in the Auto LU column.
None
This means do not use auto LU Name or Device ID based on user Claims.
Claim Type
The exact Claim Type where the user's LU Name or Device ID will be found.
Claim Query
Dynamic LINQ used to query the user's claim, the result of which must be a value that is used as the user's LU Name or Device ID.