Two different scenarios may cause some buttons in the Console to be greyed out, as per the example below:
If you haven't created an app
You'll need to create an app to be able to use all the functionalities of the Console. Simply create one by selecting the "Create app" button at the top.
If you're not the admin
You need to be the admin of the organisation to have full access to some options. If you need to make changes that are not enabled for you, please contact the admin of your organisation.