Put your board on a secure surface put the included bubble level as shown. Wedge folded paper etc. until it is level. A magazine under each end can act as a good adjustable surface, or a piece of wood.
Use some paper towels to clean the axles and the entire area around the bearings.
Apply the grease with the included applicator
Bearing should look like this. The axle should be coated about 1/2 inch up. The goal here is to prevent the silicone from sticking permanently to anything.
Wait 24 hours, DON'T touch it!
Don’t move the wheel! 12 hours is usually enough, but if the silicone isn’t fully cured, it will tear apart and you’ll have to start over.