Blocks
Settings - Notifications
Notification preference layouts: a channel matrix, grouped switches and a delivery schedule.
Pick the matrix when users need per-channel control, the switch list for simple on or off preferences, and the schedule when digests and quiet hours matter.
Channel Matrix
Events down the side, email, push and SMS across the top, with column toggles.
Grouped Switches
Switches with descriptions, grouped into sections, with a pause-all master switch.
Delivery Schedule
Frequency cards (instant, hourly, daily, weekly) and quiet hours.