What times-in-force can I use when trading cryptocurrencies with Interactive Brokers HK?

Times-in-force for BUY limit orders:

• IOC: Immediate or cancel
• Minutes: Order is canceled if not filled within five (5) minutes…

The "Minutes" time in force is available only for cryptocurrency orders. It specifies that any unfilled portion of an order will be cancelled after five (5) minutes. 

Additional Information…

You submit orders in the same way as you would for any other financial instruments.

The permitted order types are as follows: Market, Limit, Stop Market, and Stop Limit. In terms of their validity, orders can be: IOC or Good-til-Time (5 Minutes)…

IOC (Immediate or Cancel) is a time-in-force that can be set for an order to ensure that all or part of the order that does not fill immediately is canceled. To use the IOC time-in-force, from the Time in Force field on an order line, select IOC. …