To set up a site and gather their customers’ communication preferences, CK should create a Lightning Bolt solution with a template and a login flow to gather the preferences. A Lightning Bolt solution is a package that contains an industry-specific template, theme, flows, apps, and components that can be used to create an Experience Cloud site. CK can create a Lightning Bolt solution that includes a template with the required pages and branding for its customers’ site. CK can also include a login flow in the Lightning Bolt solution, which is a flow that runs when a user logs in to the site. CK can use the login flow to collect the customers’ communication preferences and store them in Salesforce.