#64bit nomacs vs 32bit nomacs how to

wine64 directories? Then one would launch programs thru the appropriate 'bit' directory? If so, I am a long way from understanding how to set this up and launch each of the programs by this method. I did look at the link below which indicates establishing.

Alternately, I could click on the Desktop icons and execute them. In 16.04 my gnome Applications drop down menu had wine listed, and I could execute either program there. If I enter for my PC 'WINEARCH=win32 PREFIX=~/utility/apps_wine/ACAD2000/setup.exe', where/how do I execute ACAD2000? And after closing ACAD2000, how do I execute Irfanview, same as before with Desktop icon? So I have Irfanview icon on the Desktop(actually not sure how I got it there as had a lot of difficulty getting WINE to install), and I can execute it. I appreciate your response, but I really need lots more hand holding (and I did look at the link you provided) - like maybe step by step after making the WINEARCH entry. (this was all so easy back in 16.04, both apps 32bit, and Wine showed in the gnome-classic pull down menu) This is all kinda wordy, but hopefully characterizes what I do not understand. wine directory should be renamed? If true, if I do that, what does that mean for execution, ie, the need to execute one program in 64bit and the other in 32bit? Is that all there is to it, or do I have to do something that will guard the existing ~./wine? I believe I read somewhere that the. And from what I gather this will place an ACAD2000 icon on the Desktop that can be clicked to execute ACAD2000? An Irfanview icon is on the desktop that I click to execute 64bit Irfanview. So, I understand I would enter on the cmd line WINEARCH=win32 PREFIX=~/utility/apps_wine/ACAD2000/setup.exe.

What I want to know is how to properly implement the WINEARCH=32 thing, and not mess up what I have. I have read a number of posts and understand to use it in Wine I must invoke WINEARCH=win32, but I do not under stand how it all goes together.

I have installed Wine-3.6 on my 64bit Ubuntu 18.04.