How to configure my wAP ac so it act like a AP?

Hello.

I have a RB1100AHx4 Dude Edition and a wAP ac

The Dude works now and I config eth1 as WAN and bridge all the other ports.
How shold I configure the wAP ac to work with the Dude.
The wireless users should be on the same network as the wired one.

Where should I start?

If you change topic information top som more informative than “How to configure?” you will get more people opening your post that may be able to help you,