If a work item is at an activity form which there is only one path to continue in the process, Oracle BPM will send it automatically to the next activity when you complete the execution of the mandatory tasks of the current activity. But there may be more than one path following the current activity. In this case, the user must specify the next activity or user with Send To (described below). Other work items might give you the option of sending them to the next activity while waiting on another task that cannot yet be performed.
To send a work item to the next activity: