filters help

Hi ., i have already buy custom field , but please can you explain my
how to use the code you post in your site

with pratical example ?

for example this two :

Returns an array
Used to modify or add new tabs to the settings section.

add_filter( ‘business_manager_settings_tabs’, ‘example_function_for_settings_tabs’, 10, 1 );

function example_function_for_settings_tabs( $tabs ) {
print( $tabs ); //print the return value
return $tabs;
}
business_manager_XXX_settings_fields

Returns an array
Used to modify or add new fields within a settings tab.
Replace the XXX with any of the settings tabs ID’s listed below.

general
employee
client
project
document
extensions
add_filter( ‘business_manager_settings_fields’, ‘example_function_for_settings_fields’, 10, 1 );

function example_function_for_settings_fields( $settings_fields ) {
print( $settings_fields ); //print the return value
return $settings_fields;
}