How to install several separate versions of Chrome Portable - NOT "update"

I forgot what it actually does and whether there is some way to control that latter in the install process but the first prompt upon running say GoogleChromePortable_68.0.3440.84_online.paf.exe is downright scary. I don't want to run any risk of the thing even thinking about "updating" anything - ever. I just want it to park all it's bits into whatever folder I give it - no less and no more.

Is there a command line switch or something?

Don't even know if it's going to work at all (I seem to remember that online "installers" from https://sourceforge.net/projects/portableapps/files/Google%20Chrome%20Po... don't respect declared version at all but dump whatever is the latest on you) and I definitely don't want any risk of it touching my 58.

It probably just snoops and sees GoogleChromePortable.exe running but I have to make absolutely shure that it doesn't "decide that it knows better" if I shut it down the guardian. Especially if it's going to dump 85 on me.