How to organize digital documents for administrative work? As professor I have to organize a lot of digital documents. I have working systems to do this for research and teaching and I am quite happy with these. Moreover, questions on such topics have already been asked, e.g.,  here or here.
However, for administrative work I regularly find myself thinking about where to store and how to name different documents like official minutes, my own notes, agendas, invitations, accompanying presentation pdfs, study regulations, law gazettes,... I have not set up a working system that I am happy with and one reason may be that, when I start to be in some committee, I do not really know in advance what kind of documents will come in. Should I arrange them by type? Should I only keep links to the place where the newest version is? Should I organize everything that is related to a certain meeting? I may add that I have a system to organize documents for hiring committees as I already know what kinds of documents are involved but that is basically it.
So my question is:

How do you organize your digital documents related to a certain administrative job?

You may answer with general guidelines but I am also interested in solutions for specific cases.
I'll upvote anything that I find reasonable and check the answer as correct that helps me best.
The lovely thing about organizing things electronically is that it's much easier to re-organize than physical paper.  The problematic thing is that you can let things accumulate for a lot longer before noticing there's a giant pile forming.

My own personal solution is thus to start each new commitment as its own single folder.  For example, if I'm serving on a committee, that committee gets a folder and everything about it goes in that folder.  Likewise, I have a folder where documents about required trainings go.  

If only a few documents show up, one folder is enough.  For example, for the journal where I'm an assistant editor, I've got only one folder with just a handful of files, since almost everything I need to remember about that responsibility is in its online system.  When more than a dozen or so documents appear, however, I'll create at least one subfolder that can hold a cluster of documents that I don't want to have staring me in the face every time I think about the project.  As things further accumulate, swelling the contents of the top-level folder or the subfolders I've developed, I'll continue developing structure and substructure reactively.

Thus, by deferring organization until there's a quorum of things to organize, I give myself time enough to learn about the organization of information that I need to do.  By beginning organizing when there's a dozen or so items in a location, I deal with organization at an early enough stage that it's not a daunting and time-consuming task.