Push-button ballast switch 2004 Air Nautique 226 L

Any idea on how these ballast switches function? I'm installing an aftermarket ballast system and would like to use these switches to control the pumps, but I'm unclear how one button can operate both the fill pump and drain pump. Does it cycle through the various operations (off --- fill on --- off --- drain on --- off --- and so on)?

Has anyone else utilized these switches for after market ballast? Any tips? I've read that it can be a hassle to find the terminated leads in the wire bundles, so I've prepared myself for that.

I'm using Tsunami 1200GPH pumps which draw 3.6 amps each (3 fill and 3 drain). At most it'll be pulling about 11 amps. I'd expect that to be within spec of what the electrical system was designed for, but not sure.