I've discovered that Examity requires test-takers to download a secure browser called
ESSecureBrowser.
There might be some problems with compatibility, at least for Mac users, if the documentation is to be trusted. According to the software's
system requirements for Mac users, the latest supported operating system is Mac OS Catalina 10.15.1, but I am currently running Mac OS Big Sur 11.2.1, for example.
This doesn't necessarily mean that Examity's ESSecureBrowser won't work on newer Apple computers and operating systems (the software system requirements simply might not have been updated for a while), but for now it's definitely a concern. I don't know whether
Windows users are in the same boat.
If necessary for software compatibility purposes, then you could always partition your hard drive and boot a volume with a different, older operating system, but let's hope these types of fancy technological workarounds are not needed, as they are neither practical nor feasible for most. (Ask me about the time I installed Windows on my MacBook Air just to take the At-Home GRE.)
Finally, I'm going to assume that the GMAT Online's extra break is located between the 1st and 2nd sections, like the test-center GMAT, unless GMAC tells us otherwise—or between the 3rd and 4th sections if for some reason you choose the "classic" order #1 (AWA, IR, Quant, Verbal) instead of the far more popular orders #2 and #3.
Download ESSecureBrowser for Windows usersDownload ESSecureBrowser for Mac usersWindows System Requirements for secure browserMac System Requirements for secure browserWindows User Download and Install InstructionsMac User Download and Install InstructionsSource:
https://gmac.examity.com/SystemCheck