In DirectAdmin you can set permissions to files and directories easily.
Firstly you need to be logged in. Then go to File Manager or click Files.
There you will see file manager with all it’s features.
Now to set permission, select decided file or directory and click set Permission button.
By default permission value is 755, but you can set another values just by entering permission number instead of 755.
Also, there is an option to apply recursive permissions by selecting Recursive checkbox.