MAC address filtering please help

Hello, I’m not able to set up wireless connection on my HP printer and the reported problem is that the MAC address filtering may be enabled on my wireless router and that could be preventing my HP printer from connecting to my wireless network during set up.
The solution that is recommended is to disable the MAC address filtering if that is enabled or if I want to keep the Mac address filtering enabled, I must add the MAC address of my printer to the list of permitted device on my wireless router before continuing. 

So I need to find out how can I discern if my wireless router has the MAC address filtering enabled and how to disable it or at least add my printer MAC address to the wireless router