You need to set up for the URL you want a response action. You can use an exact math, a file name or use any Regex you want. When the url comparison is true by one of your matches than the respond is launched. For us, adding a delay is done by adding the following command *delay:#### followed by the number of millisecond to have the delay.
During your test, the code that must be executed after both dependencies load will be delayed if you have setup a delay for one or many of the dependencies.