Here is my Solution for this Achievement. First make sure you are outside a Mission. (At some Points in the Game it is not possible to Call your Friends)
Open your Mobil Phone (D-Pad Up) and Call the other 2 Main Characters for a Hang Out
. Call both in a row, not one then pick up this then the next. No! Directly both!
After the Calls you have 2 new Symbols on your Map:
Drive to both and pick up your Friends. It is important that you have a Car with 4 Doors!
Otherwise the third Character dont enter the Car.
If all three are in the car, you have 3 potential Areas to do this Achievement over the "Car way". If you have a Hangar at the Los Santos International Airport, you'll get no rating more here!The first Area
is the Los Santos International Airport in the South of the Map (3 Star Rating)The second Area
is the Prison on the East Side of the Map (4 Star Rating)The third Area
is the Fort Zancudo on the West Side of the Map (4 Star Rating)
In my Video i show you the Achievement in the first Area and at the End i show you the 2 others. I add a Timer in the right Corner for a better visibility for the 3 Minutes.