China DOS Union

I downloaded PWIN3.2 and want to modify it myself a bit, but I don't know what some of the files are for. Can you explain them in detail? Thanks.
Also, I don't want things like the clock to be shown in the main group. I think I should modify CMAINGRP.GRP, but I don't know what should be used to edit this file?
Thanks

To modify it, just make the changes directly in the Windows operating interface and save them; there is no need to manually modify any files.

By the way, this boot disk is also made with the MS-DOS 7.10 kernel, so it should be able to deal effectively with "logical locks," right!

I still haven't managed to boot this disk successfully. It doesn't work in vm, and it doesn't work in that visual floopy either.
Right now I'm deleting things and trying to get it down to 1.4m, but it's a bit difficult. I don't know which fonts aren't required; I want to delete them.

VMWare and VFLOPPY do not support 1.68MB IMG files, so it won't work. But Virtual PC, DiskEmu, and a real floppy drive can, because they all support 1.68MB IMG files. Unfortunately VPC 5.x has a BUG, so it cannot run normally. It is recommended to use DiskEmu under VMWare to boot this IMG file, or use a real floppy drive in real mode to boot it. There is already a ready-made VMWare+DiskEmu+MiniWin3.2 boot disk here:

http://newdos.yginfo.net/dosware/doscd.zip