Launcher Menu
When a launcher is focused, you could open its context menu (using "C" key). This menu allows you to directly edit, modify and configure the launcher. You have basically 6 possible options:

Addon Setting : to access Advanced Launcher configuration menu
Go to root : to come back to Programs Add-ons menu
Search : to search items using different criteria
Manage sources : to add file sources from the XBMC filemanager
Create New Launcher : to add a new launcher
Edit Launcher : to modify any parameters of the launcher
Add Items : to add launcher's items (only for files launcher)
Add to favorites : to add this item the XBMC favorites
Search
When selecting this option, the Advanced Launcher will ask you to select the criteria of your search : by title, release date, platform, studio or genre. For the search by title you will be asked to enter a query text and will search in all launchers, items having this text into their name or title. For the other search criteria, a list of existing values will be displayed.

Create New Launcher
This option allows you to create launchers (stand-alone and file launchers). All the details concerning the use of this option is described here.
Edit Launcher
This option allows you to edit and modify any option concerning the launcher. When selecting this option, a menu with new options appears :

Import Infos, Thumbnail & Fanart : This option will automatically import data, thumb and fanart images for the launcher.
Modify Datas/Infos : to modify the launcher displayed information.
Change Thumbnail Image : to set or change to thumbnail image of the launcher.
Change Fanart Image : to set or change to fanart image of the launcher.
Mark as finished/unfinished : to mark the launcher as finished or unfinished.
Manage Items List : this menu will give you access to item list options : import/export/delete.
Advanced Modifications : will give you access to launcher advanced configuration options.
Delete : this option will simply delete the launcher. (but not the related files)
Modify Datas/Infos
This option will give you to modify all the displayed metadata of the launcher : title, platform, release date, studio, genre and plot.

Import Infos from... : to automatically import launcher data using the selected data scraper.
Import Infos from .nfo file : to automatically import launcher data from the corresponding .nfo file.
Modify Title : to edit the launcher title.
Modify Platform : to select the launcher game system from a list of supported platforms.
Modify Release Date : to manually edit the launcher release date info.
Modify Studio : to manually edit the launcher studio info.
Modify Genre : to manually edit the launcher genre info.
Modify Description : will import the content of a selected text file and will save it as description.
Save Infos to .nfo file : to save launcher data into the corresponding .nfo file.
Change Thumbnail image
This option will give you the possibility to change the thumbnail image assigned to the launcher. This option will open a new menu:

Import from... : will automatically import an image using form the selected thumbnails scraper, using thumb region and image size limit criteria. The image will be saved into the folder defined by the launcher thumbnail path parameter.
Import Local Image : will browse and import a local image. This image will be saved into the folder defined by the launcher thumbnail path parameter.
Select Local Image : to browse and assign a local image. This image will not be saved into the folder defined by the launcher thumbnail path parameter but only linked.
Change Fanart image
This option will give you the possibility to change the fanart image assigned to the launcher. This option will open a new menu:

Import from... : will automatically import an image using form the selected fanart scraper, using image size limit criteria. The image will be saved into the folder defined by the launcher fanart path parameter.
Import Local Image : will browse and import a local image. This image will be saved into the folder defined by the launcher fanart path parameter.
Select Local Image : to browse and assign a local image. This image will not be saved into the folder defined by the launcher fanart path parameter but only linked.
Items list
This menu will give you the possibility to automatically import export items data using .nfo files and to clear the items list.

Import items data from .nfo files : will automatically import/update item data from .nfo files. Filenames of .nfo files must be the same than items.
Export items data to .nfo files : will automatically export/create/update item data into .nfo files. Filenames of .nfo files will be the same than items.
Clear Items List : will delete all the items entries of the launcher (clear list). Files are not deleted.
Advanced Options
This option will give you the possibility to modify specific options of the launcher. Theses options are for advanced users. A new menu will open:

Change Application : to select the executable application file linked to the launcher.
Modify Arguments : to change the arguments send to executable application file linked to the launcher (command line).
Change Items Path : to modify the path where are located the item files. This option is only available for file launchers.
Modify Items Extensions : to change the extension of the files managed by the launcher (command line).
Change Thumbs Path : to define the path where will be located the thumbnails images corresponding to the items or the selected launcher.
Change Fanarts Path : to define the path where will be located the fanarts images corresponding to the items or the selected launcher.
Change Trailer file : to select the video file path that will be use as a video trailer for the selected launcher.
Change Extra-fanarts Path : to select the path where will be located the extra-fanarts images corresponding to the selected launcher.
Toggle XBMC into Windowed Mode : this option define how XBMC will be displayed after starting an application (windowed or keep into fullscreen).
Add Items
This option will allows you to add and assign items to the launchers. There is 2 methods to add items : using the automatic scan option or do it manually. When selecting this option, a new menu will appears :

Scan for New Items : will start a scan of the assigned items directory. Any new item files with the right file extension will be added. If data, thumbs and fanarts scraper mode options are activated (semi-automatic or automatic) for scan, the Advanced Launcher will download those informations and images. Item data entries will be also automatically removed if the corresponding item files are missing.
Manually Add Items : this option is dedicated to add items manually (for example for items that are into a different folder). When selected, you will be asked to select the item you want to add, and to give it a title name.