I daisy chain app reloads with the first at a scheduled time / repeat interval, then trigger the rest on successful reload of the previous task. Thus it runs through the apps reloading them one at a time. The apps do not all need to be in the same stream, so you can have QVD generators in one or more streams and then apps in one or more streams.
Could you be more specific as to what you mean when you say Daisy chain app. Sorry I am fairly new to Qlik so I am trying to pick everything up from the community and by reading up on things.
Also when you say it triggers the rest on its success does that mean I still have to setup the initial reload task on each app?