InitiationType Element (Workflow)
Specifies which events are enabled, at workflow association, to initiate the workflow.
The InitiationType element takes any of the following values:
Manual Users can manually initiate the workflow.
OnNewItem The workflow is initiated automatically when a user creates a new item.
OnItemUpdate The workflow is initiated automatically when a user updates an item, including updating item metadata.
OnMajorCheckin The workflow initiates when the user attempts to approve publishing a major version of an item.
Specify the initiation types as a character-delimited string, using ";#" as the delimiting characters.
If you do not specify an InitiationType element, SharePoint Foundation treats the workflow as if the Manual, OnNewItem, and OnItemUpdate values have been specified.