the username/password that we write to connect to our sandbox cluster is always the one that we add in our add new user in Security option of our Cluster??What if we add users more than one with username/password of them respectively??
You can create MongoDB users to provide them access to the clusters in your project. The user’s access is determined by the roles assigned to the user.
To add and manage the users please refer to the following doc:
If you have multiple users, you can connect to the cluster with their respective username/password. However, their access to the cluster will depend upon their roles.
I hope it helps!!
Let me know, if you have any questions.