You'd need to write a custom script to do this. This isn't something we do natively. I'd suggest working with a qualified system administrator to perform this. You can use the API function here to suspend: WHM API 1 Functions - suspendacct - Developer Documentation - cPanel Documentation
You can use the one here to get what accounts are on a package: WHM API 1 Functions - listaccts - Developer Documentation - cPanel Documentation
You can use the one here to get what accounts are on a package: WHM API 1 Functions - listaccts - Developer Documentation - cPanel Documentation