The Conditions and Effects apply to a specific Action only. There are no global conditions or effects. The HTML interface may carry over the input field values into the next Action definition but those values can be altered before the next Action is saved. There is no fixed limit on the number of Actions. With multiple Effects per Action the number of Action definitions needed may be less in V2 compared to V1. The number of Conditions and Effects per Action is 5 with HTML, 6 with Harmony client.
The underlying Action logic is the same whether the Action is defined through the HTML interface, Harmony client or XML API. Screen space is the limiting factor when using the HTML interface.