What determines Response rules default and Schedule section defaults?

Summary:

Create Negociation, select RFQ Type and Standard style>Then in Overview>Response rules, the attribute Restrict to invited suppliers is selected by default. What determines this choice of default? and all other Response rules defaults?

How to default to blank selection?

Under Schedule section, what determines when Preview immediately or Open immediately are checked or not checked by default?

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

25B

See IDEA:

Code Snippet (add any code snippets that support your topic, if applicable):