This is a developer level documentation and support is not provided for customizations. You can learn about action and filter hooks here. If you are not sure what to do, consider hiring a developer.
Settings
Filter – class-wceb-reports-page.php, class-wceb-admin-menu.php, class-wceb-network-settings-page.php, class-wceb-pro-page.php, class-wceb-settings-page.php, class-wceb-tools-page.php
[PRO] Filter – class-wcebpro-import-page.php
easy_booking_settings_capability
Filter – html-wceb-settings-page.php
easy_booking_settings_tabs
Action – html-wceb-settings-page.php
easy_booking_settings_' . $current_tab . '_tab
Action – html-wceb-pro-page.php
easy_booking_pro_page
Action – html-wceb-tools-page.php
easy_booking_tools
Action – class-wceb-admin-menu.php
easy_booking_save_settings
Action – class-wceb-settings-network.php
easy_booking_network_settings
Action – html-wceb-product-options.php
easy_booking_after_booking_options
easy_booking_after_' . $product_type . '_booking_options
Action – html-wceb-variation-options.php
easy_booking_after_variation_booking_options
Booking statuses
Filter – html-wceb-order-item-meta.php, html-wceb-edit-order-item-meta.php, class-wceb-list-bookings.php, html-wceb-reports-filters.php
easy_booking_display_status_pending
easy_booking_display_status_start
easy_booking_display_status_processing
easy_booking_display_status_end
easy_booking_display_status_completed
Action – class-wceb-booking-statuses.php
wceb_update_order_items_booking_statuses
wceb_order_item_status_' . $new_status
wceb_order_item_status_changed_from_' . $old_status . '_to_' . $new_status
wceb_order_booking_status_changed
Reports
Filter – class-wceb-list-bookings.php
easy_booking_reports_columns
easy_booking_reports_sortable_columns
easy_booking_reports_custom_columns
easy_booking_reports_display_custom_column
wceb_reports_booked_products
easy_booking_filter_reports
easy_booking_sort_reports_columns
Filter – html-wceb-reports-page.php
easy_booking_reports_tabs
Action – class-wceb-reports-page.php
easy_booking_load_report_scripts
Action – html-wceb-reports-filters.php
easy_booking_before_reports_filters
easy_booking_after_reports_filters
Action – html-wceb-reports-page.php
easy_booking_reports_' . $current_tab . '_tab
Imports
[PRO] Filter – class-wcebpro-admin-ajax.php
easy_booking_import_booking
[PRO] Filter – class-wcebpro-list-imports.php
easy_booking_custom_import_columns
easy_booking_display_custom_import_column
[PRO] Action – class-wcebpro-admin-ajax.php, class-wcebpro-import.php
easy_booking_before_delete_import
[PRO] Action – class-wcebpro-import.php
easy_booking_save_imports