Planet

The planets screen lists all planets of your current empire. You also need to go through this screen if you try to overthrow your liege or try to conquer another empires planets. Depending on your role you can initiate different actions.

As overlord

 * give up to 3 intelligence advisor specific tasks on a planet outside your own realm (gather intel, sabotage, recruit officers from that faction, advocate war, advocate peace)
 * give up to 3 economic advisors specific tasks on a planet of your empire (increase mood, increase population to 100k)
 * give up to 3 defensive advisors specific tasks on a planet of your empire (increase ground troop size)

As Citizen
As a low-ranking member of your faction you have no options in the Planet tab.

Ground troops

 * up to 15k per planet
 * can be increased by defensive advisors per month (turn): (advisor int + advisor char) * 4
 * unassigned defensive advisors will improve planets on their own
 * attack/defense value depends on empire tech

Income

 * income per planet is Population * (0.2 + 0.0125 * Mood)
 * income is only paid out every april
 * an economic advisor can be used to push the population size up to 100k

Mood

 * influences income
 * an economic advisor can be used to increase mood as long as the current mood is below 95, +5 every month (turn) and costs 3000 (+5/3000 are fixed and not advisor dependend)
 * can be lowered by hostile intelligence agents
 * changes depending their overall war mode and your actions (?)

Pirates

 * cost 100k for 6 months (turns) of service, remaining time of service is listed in the empire stats section of the planet screen (above number of persons assigned to jobs)
 * depending on your characters some will always refuse, some always agree to work for you
 * they will assist in 1 fight per month (turn), you're asked before every fight if you want to call them
 * they replenish after every fight
 * some characters have the ability to disable pirates and take them out of the fight

Strategy Council

 * your ships cannot be moved on fields of planets outside your empire unless you declared them as war aims
 * your council members will advise some planets, but you can pick your own
 * often one member will suggest to remain peaceful