Creating Projects folders in Codeigniter 4

[vinpkl]

hi

i just installed xampp
then inside xampp i pasted codeigniter 4 folder name ci4

now inside ci4 folder there are 5 sub folders

1. app
2. public
3. system
4. tests
5. writable
   and some other files like
   changelog
   composer
   deptrac
   env
   licence
   readme
   security
   spark

So i would like to know where do you create project folders in codeigniter ?
If i want to create 10 websites in codeigniter then i will create 10 website folders in which folder ?
and then what all folders will be needed inside those 10 website folders ?

thanks
vineet