ArthurDent

I heard that both the viewer and the trial version are X7 but I did not download either myself.

You can put as many sinks as you want into a cabinet by dropping them into the plan first and then dragging them on top of the cabinet.  They won't stick with the cabinet though.
 
You can change the drawer front to a panel which won't have any hardware.  Then choose the panel style from the library that matches your other drawer fronts.
 
These all work in X6 so I assume they will still work in X7 too.

You don't need to turn off auto rebuild deck framing to get rid of the support beams and posts.  Just open up the room dialog for the deck and turn off "deck support beams".  If the auto rebuild is off, you will need to manually rebuild the framing to get rid of them.
 
If you more then one deck room, you will have to turn them off for each of them.
 
If you want them off for any new decks, then turn them off in the deck room defaults.
 
If you are still having problems, post a plan.