When you arrive in a complex, there is a “Link” UI button ala skyhooks/ESS.
Linking will begin the capture process. A site can only support links up to its limit. Such as an Small-1 supporting one link, or a Large-4 supporting four. Opposing factions will need to remove the Contested state before they can link.
When the site is completed, everyone who is linked will receive their payout. Anyone else on grid receives nothing.
Seagulling and awoxing are caused by NPC militias tho. I mean what do you think is going to happen when you force people to be blue to each other and send them into low sec? Curious