The Subprocess element is located in the Activity drawer of the process editor palette.
An embedded subprocess folds a part of a process into a box. This makes hierarchical structuring of the process model possible. Sub processes are obtained top down or bottom up. Either by selecting and wrap parts of a process or by inserting an (initially empty) embedded sub element from the palette.
The Name Tab is included in the mask of all process elements and contains the name and a description of the element.