The delay flow control will delay the subsequent action for specific time. Delay can be nested (place delay under another delay).
Delay can be placed under event or other flow controls. You can put some actions under the delay, or after the delay, these two ways are equivalent, you can choose any one you like:
You can see the button on the right of input field, that means you can use properties to build your delay time.
Here is an example on how to use the delay.