  In this paper a conceptual overview is given of the software foreseen to
configure the ATLAS trigger system. Two functional software prototypes have
been developed to configure the ATLAS Level-1 emulation and the High-Level
Trigger software. Emphasis has been put so far on following a consistent
approach between the two trigger systems and on addressing their requirements,
taking into account the specific use-case of the `Region-of-Interest' mechanism
for the ATLAS Level-2 trigger. In the future the configuration of the two
systems will be combined to ensure a consistent selection configuration for the
entire ATLAS trigger system.
