In Azure DevOps, you can have multiple Git repositories per team project. Try doing the following:

1. First, visit the Manage repositories interface. The following screenshot shows how to access this interface:

2. After opening this interface, a new interface (as shown in the following screenshot) opens up. Here, you can add new repositories by clicking on the Add... button with a plus sign (marked with a 1 in the following screenshot) and filling out a repository name.
3. Repositories can also be removed, by clicking on their name and then Delete (marked with a 2):

Removing repositories is not something that is often done. It might make more sense to make a no-longer-used repository read-only or remove all authorizations on it.

Now, let's learn how to secure the repositories that we create.