it looks like the Events Dashboard only shows upcoming events. As I am using Civi to Manage membership and attendance to events, I would like to easily access all past events in order to edit participant lists, etc. HOW DO I DO THIS? And is there a reason why the events dashboard does not offer the choice of showing events? Thanks.
Welcome to StackExchange Daniel. You are probably talking about this view: Events > Dashboard, which indeed only shows upcoming events and recents registrations.
There is another page, Events > Manage Events, that allows you to search and filter for events or show all events including past ones.
You could of course also create a report to list all (relevant) events and/or participants.