Source folder for files upload API?

I'm trying to utilise APIs that upload files to existing studio projects which are published to Groupshare; however, I'm not sure how to locate the source folder where I should put the files in.

Here are the APIs I'm trying to use:

POST /api/projectserver/v2/projects/{projectId}/files/upload

PUT /api/projectserver/v2/projects/{projectId}/files/{languageFileId}/upload

POST /api/projectserver/v4/projects/{projectGuid}/update

POST /api/projectserver/v4/projects/{projectId}/files/upload/perfectmatch

Please note that I'm trying to use my machine not the console's environment.

emoji