The use of a minor in a sexual performance, or 6. If Sex offenders level two sex offender has been designated a sexual predator, a sexually violent offender or a predicate sex offender, he or she must register for life regardless of risk level. What is a "Tier"? If you have been convicted of a sex crime in Arizonayou should be aware of your assigned risk level and you should also comply with all of the requirements under the Arizona Sex Offender Registry. This information is available through local police departments and through the online registry. This designation, along with Sex offenders level two risk level, governs the duration of the registration.