使用composer和PuTTY安装Paypal PHP SDK

Using PuTTY (I don't have root access to the server) I typed composer require "paypal/rest-api-sdk-php:*" as it said here: https://github.com/paypal/PayPal-PHP-SDK/wiki/Installation-Composer and it works fine, but how can I install it into directory d/pp/ instead of root? I tried d/pp/composer require "paypal/rest-api-sdk-php:*" but that's not it

I already downloaded the SDK directly but it seems not to work properly so I want to try it this way and I want to learn it anyway