Step 1:  Select the EVENTS module from the module navigation menu and then click on Online Event in the left-hand menu.  

Step 2: From here, navigate to the right side of the screen where you will click on Action (three dots) on the line of the event you'd like to choose. Then click on Registrations. The window will show details of guests who have booked the event. Details that are given: Name, Email, Signup Date, Payment Source, Quantity, Paid Amount, and Notes.