Can Interactive Brokers support "GIVE-UP" or "TAKE-IN"?

I saw the following page:

http://pearlmancta.com/To Open Account.htm

Such CTA use many FCM and Interactive Brokers is one of them.
It looks like Interactive Brokers can support "GIVE-UP" or "TAKE-IN"?

Does any CTA or CPO use Interactive Brokers as FCM and use their "GIVE-UP" or "TAKE-IN" function?

Please share your experience. Thanks.
 
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