I want to make an anti-exploit with call admin option, help?

This is not a place for this kind of requests! However, here's a quick run-through of the challenges you will face:

Web server

You will need a web server to receive these requests! Using ROBLOX HttpService, you must make sure that there's a way to communicate the request to the moderators. You must be able to:

1) Recieve the request data, requestor name, requestor user ID and any other necessary report data.

2) Store this data for further use, through the means of a relational database.

Notifications

This is one of the trickiest parts. You need to be able to send notifications to the moderation team! You must have two things in consideration:

1) You should only send notifications to online moderators.

2) Should you have many users, you should not send the same notification/request to every online moderator.

An interesting consideration for the notification process would be Pushbullet. They provide an API that allows you to send notifications to a specific Pushbullet account and it is available on most mobile and PC devices.

Resolution reports

After the moderator actually goes in-game, you must tackle the issue of noting down what happened, involved parties and possible ban action.

Don't forget that to provide the latter, you must also create a database for keeping track of the bans and it must be accessible to your users.