Revise introduction to Common management tasks section

Author: stevepiercy

docs/install/manage-add-ons-packages.md

@@ -155,7 +155,9 @@ See the [documentation of `mxdev` in its README.rst](https://github.com/mxstack/
 
 ## Common management tasks
 
-This section provides examples of common management tasks.
+This section provides examples of common add-on and package management tasks.
+For the examples, we will modify the default files from the previous section {ref}`manage-mxdev-usage-overview-label`.
+We will also use Classic UI for the interface because some packages and add-ons have not yet been updated to work with the new frontend.
 
 
 (manage-add-an-add-on)=