What the video says is relative easy to do. The question is that the gut is talking about a money management aspect of an unknown strategy. Don't you think you should have a solid strategy first before trying to implement its money management?
You can do it on the 'On Timer' tab of the builder. Additionally you should specify the period of time you want it to be executed by selecting the wrench icon on top right the builder.
I'm afraid I'm not an expert at indicators. I don't see any visuak buffer either, but I'm pretty sure it must be there if you look at its code. Could miro or roar confirm it, please?