You can send a signal tone to your tablet which will be played back for two minutes. For the signal tone be played back, your tablet needs to be turned on and be connected to a mobile network or Wi-Fi network.
Click Lost Mode and follow the instructions on the screen to lock your tablet.
You can lock your tablet with a code and add a message to the tablet screen saying that you've lost your tablet.
Click Erase iPad and follow the instructions on the screen to delete all tablet content. Please note that you will no longer be able to use Find My iPad when you've deleted all tablet content.
You can delete all tablet content to prevent others from accessing it should your tablet get stolen. When you've deleted all content, your tablet needs to be activated using your Apple ID.