If you have the due permissions you can access the Manage Smart Filters (a) via Settings → Jira Settings → Apps as shown below or will be listed on the Jira sidebar menu Apps or you can access via Settings → Jira Settings -> Apps as shown below.
(b).
(a)
|
|---|
(b)
 |
|---|
2. A list view of your Smart Filters will be displayed on the configuration page screen.
 |
|---|