Capture

Capture is a side quest in the Fallout 4 add-on Nuka-World.

Quick walkthrough

 * Talk to Shank
 * Go to the location
 * Kill every settler and minuteman
 * Open the workshop
 * Build your raider signal flag

Detailed walkthrough
Speak to Shank and choose the settlement that you want to convert into a raider outpost. Go to the location and kill every settler that lives in the settlement and kill all of the Minutemen protecting the settlement. After this you will want to open up the workshop and build your gang's signal flag.