How to Reference Multiple User Roles in Autocomplete Rule

Summary:

What is the best way to reference multiple User Roles within an Autocomplete rule? I am using the boolean variable for User Role.

Would it be to add multiple users roles separated by a comma in the literal field?

Or should there be a boolean value for each user role?

Or perhaps there is another way? Requirement is to exclude 3 different user roles from the autocomplete rule.

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