Invited Events will appear on the Dashboard under the Pending Section->Invited. Click on the Invited sub section to bring up the list of events being invited by the buyers.
The list will show some basic information in regards to the invited events. Click on the icon to view more information on the event itself.
Once you are at the event details page, you can see further information such as the event name, event owner, time left to end, person in charge contact details, correspondence address, event description and etc. Once you have read all the information and are interested to participate, scroll all the way to the bottom.
Tick the checkbox to agree with the terms and conditions following by clicking on the 'Accept Invitation' button. And that's it! You have successfully accepted the event invitation! Great work!