Until you are comfortable with the greasing of the front suspension, I would advice removing the front wheels, so that you can easily see where the grease is coming out, how much comes out and how close to the brake disk the grease could spread.
When there is enough, grease will ooze out just above the stub axle when you grease both the top nipple and the bottom nipple.
Do not forget to carefully clean off any excess grease ensuring none gets on the brake components.
Use axel stands once the car is jacked up.
Once you have done the greasing a couple of times it will be a simple job.
