1. IBM Maximo Manage 8.7 Documentation, Contract Types application: "You use the Contract Types application to create and manage contract types. ... You can also specify default properties for a contract type. When you create a contract and specify a contract type, the default properties are copied to the contract." This documentation explicitly mentions the "Contract Property Defaults" action within the application. (Source: IBM Documentation, Maximo Application Suite as a Service, Contract Types application, "Actions for contract types" section).
2. IBM Maximo Manage 8.7 Documentation, Creating contract types: "In the Contract Types application, you can create contract types to classify your contracts. ... From the More Actions menu, select Contract Property Defaults to specify the default properties for the selected contract type." This provides the exact steps to perform the action described in the question. (Source: IBM Documentation, Maximo Application Suite as a Service, Managing contracts, "Creating contract types" section).