Hey there, Andy Watson
When you sign into the Azure portal here: https://portal.azure.com
Please can you go to 'Cost Management + Billing' (You may need to search for this in the search bar).
Once you have clicked onto this service, it will load the service on the portal. Please scroll down to your subscriptions and click onto the Visual Studio subscription.
This will load the subscription for you. You should have an option to change directory.
I can't show you mine as mine has been disabled due to the subscription expiring.
Hope this helps,
Nathan