Updates and what versions work

I have a group of users who join a weekly meeting, just had them update their Zoom version to 5.8 at the direction of a Zoom colleague. Now one of my users asked this and I hop you can answer it:

"I’m on Apple i-Mac with the “Mojave” operating system on a 2013 Intel processor which is two upgrades back because later upgrades can’t run 32 bit apps and I have some I can’t do without. I downloaded from the link you sent but before opening I need to know if it will run on my older i-Mac. Let me know if it is OK to open."