The link doesn't work. But I gather this is a carbon frame with external BB. First, I'll say that creaking is usually something moving. And it can be happening almost anywhere; sound travels in surprising ways sometimes. For standard metal-framed bikes, grease everything that has threads, and also grease everything that clamps. That means the steerer tube, the handlebars, the seatpost, seat rails, etc. Everything that's metal. I might make exceptions but only for the quick release skewers, but tighten them a quarter-turn. For carbon the rules change slightly. You still grease everything that's threaded (and use a torque wrench to tighten them!) but for anything that's clamped you use a light-to-medium hold adhesive spray. I use Scotch77.

For sure, pull the crank and bottom bracket and lightly grease all the threads and interfaces, but be prepared to widen your search for the offending part.