When you Create an EVENT, our system will provide you with your Page URLs and it will be UNIQUE.
If you Plan to customize your Event's PAGE URLs, we strongly suggest that you do it BEFORE you hit the "Save" / "Save and Exit" That way our system will Identify that as your EVENT URLs for that Particular Event in your Account.
To do that, Follow the Steps:
Create or +add an Event
Go to "Advance Options"
Go to "Rename Page URLs"
Click the "EDIT" button below
Customize your Desired URLs
Click the "Save" button below
Continue building your Event [Setup / Configure] what you needed