Click on the 'User' icon on the top right and then on 'Account Management (in the old control panel SUB ACCOUNT in the top right) then MANAGE > ACCOUNT -> MANAGE PROPERTY where "Make Property Available in Multiple Accounts" allows defining the visibility of the property in the control panel, inventory (price and availability) and bookings independently.
<span class="" style="color: #f3e504; font-size: 200%;" >{{#fas:lightbulb}} </span> Only accounts owning a property can set dependencies so you will need to lg log into the account which owns a property if you want to set dependencies between rooms in different properties.