Which frequency option for ShoutOuts allows for customization?

The option that allows for customization is indeed the one that is labeled "Custom." This frequency setting gives users the flexibility to specify the exact timing and conditions under which ShoutOuts will be delivered. By selecting this option, you can tailor the experience based on specific user needs or scenarios, such as targeting particular user segments, adjusting delivery times to fit user availability, or creating a schedule that aligns with business goals.

The other frequency options are fixed and provide no room for tailoring the delivery. "Always" sends ShoutOuts continuously, "Once a day" limits delivery to a single occurrence in a 24-hour period, and "Never" disables the ShoutOut feature altogether. These options do not accommodate any customization, thus highlighting why "Custom" is the correct choice for those looking to adapt ShoutOuts to specific requirements.