I'm trying to insert 3 users as readers of a file on Google Drive and Google Docs using the API here https://developers.google.com/drive/v2/reference/permissions/insert
However, this only allows inserting 1 user at a time so I'm currently waiting for the first request to finish before sending the next one.
Is there a way to insert multiple users in one request (using an array to store the users for example)?
I've looked at the /batch endpoint here https://developers.google.com/drive/v2/web/batch, but I'm not sure how to use it or if that's what I need. I want to implement this in jQuery, but the example in the link only shows the request details but not any code.
No, there is no way to add multiple permissions in a single API request. Batching requests still uses multiple API calls but does them all as a single HTTP request. If that is what you want, it's something that the client library has to support.
You can see an example in Google's client library here: https://developers.google.com/api-client-library/javascript/features/batch