What I mean by rules is my standards that I am trying to follow for each unhandled object. For instance if an inbox object is supposed to go into my reference system (Evernote) then I go to my rules to see where this object should be placed in Evernote. If it is a reminder it should follow some rules and if it is a note for project support, it follows other rules.
Are your rules that complex?
I'm very confused. Why do you need specific rules to follow for how to handle a note for project support? Shouldn't it just automatically be filed in a container for that project? Why do you have rules for reminders? Do you mean tickler items, things you want to be reminded of at some date in the future? Why aren't they just things that you put in a paper tickler folder or in a digital equivalent and then handle them as part of your normal daily processing of your inbox? Why is there a special procedure for handling project support. Don't you just want it handy for when you are working on that project? So just put it there?
For me I have very few basic rules or standards in the way you describe. I've never bothered to write them down because they are ingrained in my handling of inbox items but I'll make an attempt at a few examples. The biggest ones are that I have standard places where I file certain types of things and a standard way of naming those things so they sort properly in computer systems.
Small bits of digital reference, emails etc are filed in my DEVONThink Database in the folder under the Active_Projects Folder that corresponds to the project that it refers to. For example, my emailed hotel reservations, a note I wrote with ideas for my presentation on Balancing Improvement and Biodiversity and my flight reservations for the Livestock Conservancy Conference I will attend are all DT in a folder 2019_Livestock_Conservancy_Meeting.
Larger digital items are on my computer in a structure that is the same. A folder of Active_Projects that contains folders for active projects. So the start of my presentation slides in LibreOffice and some reference materials are in the folder 2019_Livestock_Conservancy_Meeting in the folder Active_Projects.
Paper items are in paper folders labeled the same way.
All strictly reference materials are in folders called either Reference (in DT) or Filing_Cabinet (Mac) By default they will sort out alphabetically so I have no need to tell myself where they will be filed as it's built in once I name the item.
I have a standard way of creating filenames for digital reference. Lots of detail on that in posts here but basically for dated items dates are YYY-MM-DD_file_name I never use spaces in a filename.
All Active projects are in Omnifocus, All Someday/Maybe projects are in DEVONThink.
Writing projects are in Scrivener until I have to create printed copy.
Dated items are in my calendar.
Spreadsheets and Presentations are in LibreOffice
I do compartmentalize what goes where so that it is quick and easy to locate something because I only have 1 place where that type of thing is going to be.
So I'm still not understanding what you need the rules you have created for.