List the organization’s backup global configurations (presets): the named schedules applied to websites, with how many websites use each and which one is the default for new websites. The id is what the preset_backup field of “Create connection plugin” (POST /api/public/v1/connection-plugins) takes, and what the requests under “Backup Configurations” address: read one, create, edit or delete it, and assign websites to it there.
Every row carries the same attributes as “Show backup configuration”, under the keys the writes accept: name (may be null), status (enabled, disabled), is_default, region, schedule (frequency, start_hour, timezone, day_week, day_month), retention_period (days each copy is kept), incremental, exclusion (extensions, max_file_size in bytes), sites_count (opt in with fields[preset-backups]=sites_count), created_at, updated_at.