The product links associated with a Twilio project can be modified at any time. This is also done for some projects that are created using a predefined template (e.g. Account Notification, IVR, etc).
We call the process - “pinning”. To pin/unpin a product in your Develop sidebar, access the Explore Products page, a link at the bottom of the Develop sidebar:
Once there, browse all our products and you can Pin/Unpin them by clicking the pin icon at the top right corner of each product card:
Note that the pinning is individual per user per account, this means that newly invited users to your account - have to start off with exploring the products and add the ones they are interested in using.