Customise the time frame in scanner

Here I’m seeking your help that, I’ve a AFL which works best in 30min time frame. In chart I can get the 30min time frame but unfortunately I’m unable to find 30min time frame in scan functionality.

Kindly guide me how to customise the time frame or how to add 30min time frame in scanner.

I’m using Amibroker v6.20.1 Pro.