Please teach us how to use/create Time(“timestamp”) and TimeDelta() with picture and comment on (events). step by step.
One reason that there is no step-by-step guide as requested is probaly that it really depends on what you actually want to do.
Time(“timestamp”) and TimeDelta() are both expressions that you can include in your events, if there is any need for it.
Time(“timestamp”) allows you to get the current time of your system and TimeDelta() is the time between the previous and current frame. You can get a link to a good article about it here: What is TimeDelta() expression?
Again, the actual use of both depends on your specific case, the article in the topic linked above mentions also when TimeDelta() is useful.
You create these expressions by typing them or by putting them together through the expression builder (the blue button with the Σ 123 label). There is not really much more to it.
Maybe this is a bit general and someone else can give more examples for the use of both expressions. If you need the expressions for a specific mechanic in your project it might be better to ask directly about that.