[Noble713]

Either before or after doing what Mako said, click the Repeat Orders button.

So it would be something like:

(Repeat Orders)
Load Cargo Fighters at Sol II
Drop Cargo Fighters at Capella IV

Make sure you have lots of cargo space at the destination (a forward base where your fleet is). I've used medium transports as auxilliary carriers and they can hold several hundred fighters. You'll be hard-pressed to drop them all on a planet without cargo facilities (well, assuming it's domed).