The condition Except users in a field is not yet available in JWT Cloud, but you can implement it easily using the Jira expression condition.
As described in A general note about JWT for Jira Cloud, it is not possible to use the JWT field codes in conditions or validators. That is the reason why JWT Cloud cannot provide a one-to-one mapping of the fields which can be selected in this condition.
Create a Jira expression condition
Enter the Jira expression
!FIELD.includes(user.accountId)
by replacing FIELD by the Jira expression field code of the respective field. It can be selected using the field injector of the JWT expression editor.
Please note, that the respective field must hold the Atlassian AccountId(s) of the user(s).
In case - e.g. when using a text field - FIELD contains user name(s), accountId has to be replaced by displayName in the expression shown above.
