The Edit Event section of the dashboard is the actual administrative console of the event. All the information visible to a user on an event page is added/updated here.
To edit your event details, follow the steps:
Step 1 - Go to Account and select “ Dashboard”
Step 2 - Select “My Events”
Step 3 - Select the event you wish to edit/add details for.
Step 4 - In the event dashboard, select Edit Event Details.
Step 5 - Choose the detail you wish to update.
Read more about updating event details here