KatanaMan Pro allows you to reorder the 'effects chain' beyond the 3 or 4 presets provided by the amp as standard.
See this article for more information : Katana Effects Chain Order
GT1Man/BassMan also allows you to reorder the chain.
See page 6 of the 'GT1Man User Guide' for more information : GT1Man & GT1BassMan User Guide
The 'SharedPatches' folder provides a known location where the app can look for patches when you are using a set list.
If you use the 'Read Amp Chns' (KatanaMan Pro), or the 'Grab Patch Names' menu options to read patch / slot number information from your Boss ™ device, the app will automatically create one or more ordered lists of your patches.
Additionally, if you use the KatanaSets app to create set lists, KatanaSets and KatanaMan/GT1Man/GT1000Mate etc all use the 'SharedPatches' folder as the common location to look for the patch associated with a set list entry.
When you use the lists to select a patch, the app looks to find that patch in the 'SharedPatches' folder only. If the patch does not exist in thast location, the patch load will fail.
If you are not using set lists, you can save your patches in any loacation / folder under the home folder, you wish.
Is there a method to assign a FOLDER on my internal SD Card storage area to store patch data, set lists etc ?
When first installed, KatanaMan Pro, GT1Man, and GT1BassMan asks you where you would like the app to place its data files. You can choose to use either your android device's internal storage, or an SD Card if you have one installed.
You can choose to call the 'home' folder whatever you wish, however, by default the apps create it's 'home' folder (called 'KatanaMan', 'GT1Man', etc) in the root of the 'Download' folder on the internal storage of your device. It also creates a 'SharedPatches' folder in it's 'home' directory (eg by default '../Download/KatanaMan/SharedPatches').
Once installed, you can use the in-app menu option 'General | Select Home Folder' to change the name and / or location of your home folder (eg from internal storage to an SD Card or vice versa).
You can use any file manager to create other (sub)folders you may require. Within the app you can navigate through a folder hierachy, and save your patches in any folder you wish.
When using the 'SetList' functionality, the apps always looks for the patch related to a song, in the SharedPatches folder. However, if you are simply loading patch files (ie not using set lists), you can load/save them in any sub folder.
If you connect your Android device to a PC say, you can use a file explorer to access your patch folders/files.
The apps do not permit you to navigate "above" (ie out of) the home folder.