Implementing Enhancements in a
View 
If you have chosen a view of the Web Dynpro component as the starting point of your enhancement implementation, you can now branch to the tab page Layout. If you select, in the layout, UI elements of the original component that already exist, you will see that you cannot change these. All fields that are otherwise ready for input or change are grayed out.
Creating New UI Elements
To enhance
the layout of the view, you can create new UI elements. This procedure is no
different – from a technical viewpoint – from 
creating UI
elements in components themselves. All UI elements created within the
enhancement implementation can then be processed as usual.
Suppressing Existing UI Elements
UI elements that exist in the original component cannot be deleted.
If you do not wish to display certain UI elements that exist in the layout, you can suppress such elements in your enhancement. Simply select the respective UI element and then choose its context menu entry Remove Element. In contrast to processing an original component, the UI element does not disappear from the hierarchy or the layout preview. Instead, the properties table of the element gets an additional line with the following information:
This line records that the respective UI element has been suppressed/hidden in the enhancement implementation myEnhancement. In the context menu of the UI element, you will now find the entry for undoing the hidden status. You can use it to return the element to its original status.
Hiding a UI element means that this element is
skipped when the page is generated. It is not rendered completely "hidden" –
like, for example, a UI element that exists but is not visible. This needs to
be taken into consideration in particular whenever such a UI element was
programmed dynamically in the original component – that is, a UI element
that is then not available at runtime.
Actions, Inbound and Outbound Plugs
For each view you can create additional plugs and actions in an enhancement implementation. The enhancement implementation in question is noted in the respective management table.