When I last tried this, I sent one comsat straight up. Then, when it is high enough to see parts of an orbit nearly 180 deg apart, launch another rocket into orbit carrying 3 comsats. Raise the apogee from close to 90 deg, the apogee is then visible to the straight up satellite so you can raise the perigee of the orbiting spacecraft.
You then need to pick 2 orbits in a 3:1 resonance. The higher at 3 earth radii or more. Raise the carrier to the lower of the two orbits, release each satellite at the same point in the carrier orbit and raise it to the second orbit. Once all sats have been released the are 120 deg apart, can always see each other and at least one can see the launchpad.