Which statements about proposition visibility are true?

The statement indicating that proposition visibility can be changed only after overlay creation and is access group specific is accurate.

In the context of Pega Decisioning, proposition visibility plays a crucial role in determining which propositions are available for different users based on their specific access groups. When overlays are created, they allow for customization of proposition visibility based on the needs of different user roles or groups. Once the overlay is created, any changes to proposition visibility must be made within the context of that overlay, which is why it's tied to the access group. This ensures that only the intended audience has access to the relevant propositions, enhancing the decision-making process and maintaining confidentiality where necessary.

The other options either misunderstand the nature of proposition visibility or misrepresent its applicability. For instance, stating that proposition visibility is the same for all access groups overlooks the essential feature that allows tailored access based on user roles. Similarly, the notion that it can be modified at any time without restrictions disregards the structured approach Pega employs to manage these changes, often necessitating an overlay for organization. Finally, asserting that proposition visibility is only relevant for the Decision Architect role neglects its importance across various roles that interact with propositions within Pega, emphasizing the broader impact of proposition visibility across the platform.