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Go to the Event page
Start by going to My Apps in the top menu
Select Events
On the Events page, select the Event you are looking for (Use the filters to find an event faster)
You arrive on the Event page
Select the Assign Guests button on the Event Actions panel
This launches the Assign Guests popup
The popup displays the Event Workers that have been added to the event and the guests that have been added to it
If you are using Skills to assign workers to guests, keep the Restrict assignments tickbox selected. Otherwise, deselect it.
Press save within the popup once guests have been assigned to event workers
You will arrive back on the Event page where you will see a new Guests assigned to event workers box