Adding custom column in User List with custom action

Start up a new custom plugin for something like this, and add the first code below to add a custom “Actions” column, and the second function will add some link to the column for each row.

add_filter( 'manage_users_columns', 'new_column_user_table' );
function new_column_user_table( $column )     {
    $column['actions'] = 'Actions';
    return $column;
}

add_filter( 'manage_users_custom_column', 'new_column_user_table_row', 10, 3 );
function new_column_user_table_row( $val, $column_name, $user_id ) {
    if($column_name == 'actions') {
        return “not sure what link you want, but your link code goes here”;
    }
    return $val;
}

Refs: