You can download OAuth Client module zip file for Drupal 7 & 8 from here.
|Access Token Endpoint||https://[your-id].bitrix24.com/oauth/token|
|Get User Info Endpoint||https://[your-id].bitrix24.com/rest/user.current.json?auth=|
Please note: This step is mandatory for your login to work. Click on the Save button on the bottom of the page to save your attribute configurations.
Congratulations, you have successfully configured the miniOrange Drupal 8 OAuth Client module.