Catalog properties are read-only for now. All changes should be managed through your Google contact person.
Create a new catalog property
To create a new catalog property, please speak to your Google feeds contact.
When you create a new data feed to serve to Google, Search Console will create a new catalog property for you that includes your feed. If you have only one feed, it will be designated as the live feed, although it won't be badged as such until the first successful push to Google.
Change settings in your catalog property
To change any settings in your existing catalog property, please speak to your Google feeds contact.
Add or delete a feed or feed files
To add or delete a feed or any files scheduled for the feed, please speak to your Google feeds contact.
Adding or removing owners or users
User management for a catalog property is the same as with a website property. The only difference is that verified owners must be added by Google, as described in Create a new catalog property.