Hope this helps. For a component, just create it in a new folder and from your base class when your call to that component just calls it with a new namespace.
For example, if you are creating a new component, say employee_list.mxml in the src / component folder
ALL_EMP.mxml src/folder, , src/component,
< mx: xmlns: mx = "http://www.adobe.com/2006/mxml" xmlns: Comp = "component. *" layout = "horizontal" >
mxml
(, )...
Taglib JSP...