Create Blocks for Re-use

Hello everyone,

I am new to SolidWorks (very new; just finished the tutorials new)and need some help. The main reason we chose SW was the ability tocreate features that would act like blocks in AutoCAD, but muchsmarter.

The SW rep showed us this in a demo several months ago, but Icannot figure out how he did it for the life of me. I want tocreate a feature that functions similar to the o-ring tool in theSW toobox (I am actually creating seal grooves, just not thepre-loaded o-ring grooves), but I don't want to choose a size, Iwant the size to be based on what I drop feature onto.

I have created the feature in a model, but cannot figure out how toconvert it to something I can re-use. I think it might havesomething to do with the "recognize feature" command, but SW willnot allow me to select it.

Where can I find documentation on how to do this? Thanks!

SolidworksGeneral