Freeze x-ref layers

Hi
I have multiple x-refs in a civil 2d drawing.
In autocad I could select the "freeze" icon and go around and freeze off individual layers from the xrefs that I didn't need to see.
I can't seem to do that in Bricscad.
Can anyone tell me - in simple step by step instructions - how to set up Bricscad so that I can use this function again?
I need it to be a permanent setting that applies to any drawing that I open.
Thanks in advance

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