To modify a single event, simply click on the event you wish to edit. Whether the event is already published or still in draft form, the event information will load and be available for you to make adjustments. Once you have finished editing the event, you can then choose to either publish it, schedule it for a later date, or save it as a draft.
To avoid additional notifications being sent to your fans, it's best to turn off the "Notify my followers" toggle when editing a published event, unless it's necessary to notify them of important event information, such as a venue change.
To edit multiple events that are already published, click the check boxes next to each event on the Events page.
Click the check boxes next to the information fields you want to change, input the new information, and click Save.