First of all you need a software that you can use that will create an automatic mission for your drone to acquire images fully autonomously. It is highly recommendet that you do the phot capturing and flying fully automatically, doing it manually will in most all cases give poor results or no results at all, except if you are very experienced in doing such a work manually.
We recommend UGCS since it is a drone agnostic software. More information can be found here
For DJI Enterprise drones there is also option to use DJI Pilot