To be able to correct / edit / update event information, you must have access to the event. For that, make sure you claim your event. Once you have access to the event, proceed with the below steps.
Also, please keep in mind:
To modify the event details, follow the below steps:
Step 1: Login to your oDASH account
Step 2: On My Events page, click on 'Manage' button for the event you want to edit
Step 3: Make the required changes on the 'Event Overview' (you can edit basic details like name, dates, venue, timings, description, highlights, official link, social media links, etc.)
Step 4: All other information can be edited via the other sections under Content.