The software can be used in 2 ways:
a) By just publishing an event and never actually streaming a video (just for ranking and getting new visitors with the thumbnail that you have set)

b) By publishing an event and after that streaming a video.

First add a new item. Enter the title you want to use and description.
The tags are important. So in the case you are promoting t-shirts you can enter tags like "best tshirts, customizable tshirts, cheap custom tshirts".

Now if you go with option A from above (only publishing the item), you can set the date to be like 3 months from now. In this case the event will be added with no video, but will still rank on YouTube. Even if the 3 months pass, your event will still be available on YouTube and can still rank (with thumbnail only). 

Make sure you set a good Call To Action thumbnail, that has text that tells the user to do an action like "Click the link in description for more details" or "Video will be coming soon, until then make sure to visit" or "Please give us a call at XXXXXXXXXX"

In this case you can enter a description that contains the keyword you are targeting as much as possible (at least 3 times). And add at the start of description something like "To get the best T Shirts visit"

 Now in case you want to go with case B where you also want to stream the event, you can click on Settings and select "Auto stream events". This means that when the date is due (3 months in above example), Live Event Blaster will stream the video.

It's important to note that after you stream a video, the event transforms to a video on YouTube (so it will be a normal video). That's why sometimes it's best to just publish tons and tons of events targeting various keywords.

To start the stream you either let the due date (the date you set when adding the stream) pass and make sure "Auto start stream" is enabled in settings OR you can right click on the item and click on Start Streaming to instantly start the stream.