Hiya, faily familiar with a comman line and ubuntu, file permissions etc

I’ve been trying the Digital Ocean One Click Apps to see if it’s easier than setting up and maintaining my own open source web control panel like Open Panel or Vesta

I’ve setup a website on a Digital Ocean 512mb droplet and is workign great for smaller sites but when in wordpress and I try to update plugins or themes it can’t write to the server?

Is there a clean way of allowing it to update or do I need to mess with folder permissions by hand?

Any help kindly apprceiated

Thanks