I have found answer:
When you want to sell something, but you haven't sold anything before.
You should open iTunes Connect -> Agreements, Tax, and Banking
.
I think you have got Master Agreements -> Contracts In Effect -> only row with Contract Type: Free Applications
Apple doesn't give you access to functions for sell anything. Your App doesn't have access to products in iTunes Connect -> Your App -> Features -> In-App Purchase
Decision:
You have to sign new contract in iTunes Connect -> Agreements, Tax, and Banking -> Contract Type: Paid Applications
and fill fields [Contact Info, Bank Info, Tax Info
]
Note: You should have 'Legal' role as a user. Then you will see "Request" button. If a role is only 'Admin' (without Legal rights), you may see only "View" button, and you won't be able to sign a new contract.
After that: you'll see Auto-Renewable Subscription
in Select the In-App Purchase
you want to create.