is there any way to add a delay feature to this plugin so when people are killing scientist  it does not spam?

Spam where ? . it only shows once per kill on my server , You can disable either or both broadcasts in the config, I dont have animal kills(killed) chat broadcasts only player killed <> or killed by <> . I dont see what a delay would do ? if you set if for 5 seconds and your players killed a lot of scientist etc it would then still broadcast them all together 5 seconds later !

I mean like when 1 scientist is killed if 10 other scientist are killed within that delay timer they wont show (so it dosent spam the chat) but still alerts players.