CentOS - Dec 2016 - Network Manager - force activation of multiple connections

For each of my sites I have set up a server to act as AirPrint server.  This 
requires the LAN connection that the servers have always had, plus a WIFI 
connection to give it a presence on the WIFI  (The WIFI and LAN are on 
separate VLANS)

I have finally dragged myself into the 21st century and used NetworkManager 
for the connection, using nmtui to do the work.

The problem I have is that on most of these servers, thw WIFI connection 
doesn't always activate on bootup and I have to go into nmtui -> activate
->
WIFI etc. to get it working again.

Is there a way to force NetworkManager to always activate all interfaces on 
bootup?