Send alert box

I'm looking for a developer! I attached an image about what i want. I want to share signals with others for binary options from Metatrader by click on a button. It's like a remote trade copier, but not copy the trades, only send popup alerts.

When i push the button in my Metatrader it need to send the correct message to other users Metatrader immediately. Push notifications not work well, because i can add only 4 ID to the Metatrader.

Because it's for binary options, first i want to send an alert message about possible signal, and after that i send a confirm or avoid message.

I use a 4 level martingale in my strategy, and i want four checkbox to choose the level of martingale to show in the message.

I attached two pictures, the first is the software, there are the alert buttons, and a four orange  checkbox. I want to turn the checked level colour to turn red.

The second picture show i have a version that send push notification. The problem with it, the metatrader allow to send notifications to 4 ID only. 

To avoid misunderstanding, i need a version that send popup alerts to others computer, not push notifications. If they need a receiver EA like trade copiers, it's not problem.