Как добавить значения в многомерный массив?

У меня есть массив, похожий на рев.

Array ( [1] => Array ( [TotalPosts] => 46 [AgentSchemeNumber] => 11 [AgentName] => Vaiji ) [2] => Array ( [TotalPosts] => 3 [AgentSchemeNumber] => 22 [AgentName] => Vaiji ) [3] => Array ( [TotalPosts] => 0 [AgentSchemeNumber] => 33 [AgentName] => Vicky ) [4] => Array ( [TotalPosts] => 0 [AgentSchemeNumber] => 44 [AgentName] => Raja ) [5] => Array ( [TotalPosts] => 18 [AgentSchemeNumber] => 55 [AgentName] => Rama ) [6] => Array ( [TotalPosts] => 13 [AgentSchemeNumber] => 66 [AgentName] => Udaya ) ) 

Здесь AgentName vaiji содержит 2 записи. Я хочу, чтобы

 Array ( [1] => Array ( [TotalPosts] => 49 [AgentSchemeNumber] => 11 or 22 (any number) [AgentName] => Vaiji ) [2] => Array ( [TotalPosts] => 0 [AgentSchemeNumber] => 33 [AgentName] => Vicky ) [3] => Array ( [TotalPosts] => 0 [AgentSchemeNumber] => 44 [AgentName] => Raja ) [4] => Array ( [TotalPosts] => 18 [AgentSchemeNumber] => 55 [AgentName] => Rama ) [5] => Array ( [TotalPosts] => 13 [AgentSchemeNumber] => 66 [AgentName] => Udaya ) ) 

Пожалуйста, помогите мне, как это сделать?