Need help sharing box nation card

Setup - Vu+ Duo box ……Blackhole 1.7.1
Was running with CCcam_2.3.0 – everything fine. I just got a Box Nation card and want to share. I was told I needed OSCAM. I installed OSCAM 6059/CCcam213 from TSPanel Linux_suport.
This activated local viewing of card. The problem I am having is sharing the card. The tutorials I’ve been reading are above this first basic step. Apologies for this!!!
Do I need to remove all CCam and use OSCAM only?
If current setup (6059/CCcam213) is ok – how do I share? I have tried adding user – but they remain off line. I have tried using the creator client program but each time I try to add my friend, it over writes the basic config and the card stops working until I reflash the OSCAM.
Basically – I need to know how to add a user. Do I do it in OSCAM alone or should it work fine by adding F line in CCcam line manager?
All support is mych appreciated.

I have tried this already and did not work. I will recheck everything.

Cheers nirmies. I got it sorted. Problem with my router. Thing called DMZ needed to be enabled. Your original reply is correct way to do it.