In the Management Portal at Setup > Access Certification, you can enable access certification campaigns in the Web Portal and configure the campaign retention policy.
Enable Access Certification in the Web Portal
This option allows your reviewers to see their assigned campaigns in the My Access Reviews tab. By default, this setting is disabled.
Campaign details retention policy
Configure for how long campaign and campaign results are saved in your environment.
Select Delete campaigns results older than X months if you want to delete only the campaign results after the specified number of months.
Select Delete campaigns older than X months if you want to delete both the campaign configuration and the results after the specified number of months.
Select None if you want to preserve all campaigns-related information for an indefinite period of time.
The availability of Access Certification may be subject to the license type used in your environment.