I have created an app in https://apps.dev.microsoft.com portal with name GroupsApp and I have given couple of permissions as below:

I have created client id and secret to use in my application. I am using asp.net MVC (with 4.5.1 .net framework) web application.
I am getting some groups info and displaying on the screen. If I am logged with my account it is working fine. But if I logged in as another user then it is giving me issue as below:


I have formatted url as below: https://login.microsoftonline.com/948894dc-c0e2-43e5-a7e6-1d21dd183c9d/oauth2/authorize?client_id=75... and trying to granted the permission. Here I have logged in as admin and given permissions. Now if I check with normal user same issue is happening.
How should I give the permissions to this application.
I am not able to find any option to approve the permissions from the Azure portal.