I have this same question. I purchased a Monoprice MP Mini Plus Deluxe SLA LCD printer (a rebranded Wanhao printer) and the builtin slicing software bites. The slicer works okay, but the supports component is completely non-functional. It just doesn't do anything and if you move back and forth from the slicer to the supports section, you have to completely reload the stl file. So, I did some looking and everyone recommended ChiTuBox, however after downloading it and getting it all set up , I realized that it doesn't output the proprietary CWS file that the Monoprice/Wanhao requires.
I looked around for a plugin for this but the only plugin is the one made for PC, not Mac, so this software and nearly all other non-Wanhao software is useless. I did try downloading the Wanhao 7 Workshop, but since I bought it from Monoprice, I don't have a license to use it, plus the software sucks badly when it loads, with massive redraw issues, and not showing buttons, etc. Overall this POS has been really disappointing. If I don't get some satisfaction soon, I am going to ship this piece of junk back to Monoprice. Anyway, hope someone at Chitubox or in the community reads this.