Treat it just like normal yeast. If using it as the primary yeast, it probably needs a little more O2 than your average sacc yeast, so make sure you aerate well. After the initial aeration, you need to keep O2 out, or you risk spoiling the beer. If adding it as a secondary yeast, just add it, and don't aerate.
Remember, Brett is yeast, so treat it the same. Some say it requires more O2 though, so you might want to Aerate very well (as mentioned above). Brett is commonly thought of as a fungus or infection or the like because of how it ferments, but it is yeast.