Working with 2.3, things are a bit different. There is no "Action" form. So how would one go about creating, say BobRay's sample "cheatsheet" CMP?
I've begun by creating a couple of folders, assets/components/products and core/components/products. These I specified in the paths when creating a "products" namespace.
{Edit} Found exactly what I'm looking for!
http://rtfm.modx.com/display/revolution20/Custom+Manager+Pages+in+2.3
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For those who may be interested, I'm creating a CMP to automatically create a heavily customized Articles container intended for handling "products" and all of their support files. The CMP will have form fields for various details about the product, such as its name and what its parent should be in the Resource Tree. There will be a main menu item "New Product", as well as a button in the dashboard.
[ed. note: sottwell last edited this post 13 years, 11 months ago.]