Total Visual Agent lets you create events in disabled mode so they aren't executed while you set them up.
To run your Events, you must enable them. Simply right click on the Event name in the tree view section of the Total Visual Agent Manager, and select "Enable" from the menu. The Event should no longer be grayed out.
Just because it's enabled doesn't mean the tasks are being run on a schedule. Use the Monitor or Service to run them. They can be activated under View, Monitor and Service Status:
Once you launch the Monitor or Service, you can exit the Manager.