As stated, you can use the display itself to program, but I wouldn't recommend that long term.
My setup included an outdoor wireless bridge (Engenius brand). It is powered via PoE from inside the the Intellicenter and is setup through the onscreen portal. The Engenius unit is high power and has large omni-directional antennas and is weatherproof. Mine is wall mounted on my bricks. While my iPhone 11 can't get Wi-Fi signal from the side pad, the Engenius has no issues. Also, the bandwidth/data requirement is trivial for this, you're not streaming video so you may be able to connect without a repeater.
Once linked up, I can use the iOS app or event control the pool from Intellicenter.com. One of the nicest features is the ability to control it from an Apple Watch (dedicated watch app). So now I can turn stuff on while floating in the pool without my phone.
I will say, it's not a very refined app or experience, lots of connection issues, time outs, etc. but it is a heck-of-a-lot better than using a remote control or using the built-in display.
Here's an image of the WebUI which is good for when you need to do a whole lot of programming:
