The option then IS grayed indeed, but there's only one option (no -brackets) so you can't choose for something else. Make sure your usb is UEFI 32bit bootable (/EFI/bootia32.efi) Acer Aspire Switch 10 support to boot efi 32bit only and not support legacy boot.
Acer Aspire Switch 10 use wimboot for run windows,if you delete recovery partition, it's become unable to boot (C:\Windows\ store only link file to wim image in recovery partition and update file) Example : g Parted Bootable USB is support efi 32bit , you can try to download and boot them.
Put the supervisor password in and noticed that the stuff was shaded as if it could be changed.
Disabled the secure boot check and it disabled all the settings in the mode they were in.
Job done both for making a usable recovery partition since the hidden one was unusable and also gaining that wasted disk space. If you boot the ISO to a DVD, UEFI will recognize it as a boot device and it will give you advanced troubleshooting and the option to reinstall Windows.