Microtik + Zyxel

So my Zyxel Q1000Z router + modem is currently the only device that creates the wifi signal (I'm not a networking guy so not sure how to say this right). Unfortunately, the signal is crap so after doing some research, I bought the Microtik RB951ui router in hope of boosting wifi signal.

The box didn't provide any instructions so I'm out of clue as to how I need to set this up.

I have an ethernet cable, which I presume is attached to the Microtik and router. But how do I tell my Zyxel router/modem to not broadcast a wifi signal, but instead have the Microtik do it?

Here are the current settings I see in my Zyxel admin console: https://i.imgur.com/5b0hm3g.png

Please advise. Thanks.

#CPE_February