You can access the setup custom events with the following menu path: Site Metrics>Custom Events Metrics > Custom Events. An alternative is you can do a quick search if you do a Quick Search in the bar at the top of the main menu OR you can type / and that will bring up the search bar to query for your implemented events.
https://marketing.adobe.com/resources/help/en_US/sc/user/nav_menu.html
If you do not see the events within your menu it may require further admin console console configuration for a given report suite:
https://marketing.adobe.com/resources/help/en_US/reference/success_event.html
Analytics > Admin > Report Suites > Edit Settings > Conversion > Success Events
The Success Events page lets you configure the Event variables used on your site. You can add up to 1,000 success events. Events 81-1,000 only work if on H22 code or higher.
Best,
Brian