Guys guys guys.

I'm pulling my hair out, and I know its probably very simple but I cant figure this out to save my life!

In camworks how on earth do I machine an open slot? what I mean is... If I want to machine a slot with an end mill but the slot exits the outer profile, then how is this done? I cant insert a slot feature to do this, and a boss feature doesn't include the slot and only includes the outer profile.

I've inserted simple image so you can see what i am talking about
Attachment 187458

Thanks in advance.