Any router can work as an AP but not all can work as a bridge. For it to work as an AP all you need to do is connect it to any Ethernet port on a router (Ethernet to Ethernet port). For it to work as a bridge it will need to have a "Bridge Mode" function.
They are two very different devices, an AP acts as a connection point to a network via wireless signal, a Bridge allows for a wired connection to a network over a wireless extension. Devices can't connect to a bridge over wireless, the bridge connects to a router or AP only and allows a device to connect to it through its Ethernet port.
1. Assign static IP address NO DHCP.
2. Disable all routing options and firewall.