FM 13 - Catching CMSCheckout event

Hello fellows,

I am trying to make the FM13 CMS connector work as I'd like it to.

My FM is connected to a SharePoint 2013 library where I keep my source files.

By default, when I select a file and click "Checkout and Edit" in the CMS dialog, a small prompt window opens and asks whether I'd like to checkout all dependent files as well. I have unstructured Frame files, so I guess "dependent files" are those files that include xref pointers to the main one or the other way around.

Here is the catch - if you are in a hurry and do not deselect the "dependent files" check box, they are checked out as well so that others can't use them. This is bad.

I haven't seen any UI/maker.ini way to make this check box deselected by default. So I hope there is a way to do so via ES. As far as I can see, there is a CMSCheckout method that includes the rootWithDescendants boolean param. The question is if it's possible to catch the CMSCheckout event and change the rootWithDescendants value to false?

Thanks for your input in advance!