I have trees in several agenda files with Effort properties and I'm trying to make an agenda view that shows all trees with this property defined.
I know I can do 'M-x org-agenda m' to do a property search but this only seems to work searching for properties with a specific value. I'd like to see a list of all my trees I've committed Effort to. In my main org file I have a clock report which includes the Effort property and this works well for seeing Effort vs time worked, but for things I haven't clocked in to yet obviously nothing shows up. Is there a way I can view all trees which have a certain property defined or a (fairly simple) way to restructure the way I do things to accomodate this? Thanks