Thanks. Indeed, I'm not a member of that group so may be why I can't view it.
But I can view the document you shared. 🙂
The GAM (GAMADV-XTD3) route may indeed work just fine for folks - and as always, offers a ton of power and flexibility for those willing/able to master it.
But, like may CLI based DIY tools, there's a learning curve and time sink that many won't want to deal with. That's where I'd recommend a 3rd party tool. But, of course, those aren't free.
Now, Bettercloud(the tool I use) isn't worth it *just* for Signatures (it does a bunch of other things), but it's what I have to share for comparison:
- In Bettercloud, click on Tools-Signature.
- Click to use one of their sample templates, your own existing template, or start from scratch.
- If creating/editing template, you get a built-in editor with pre-made variables and a WYSIWYG preview feature. This makes getting your design/html much easier.
- Click continue and select who you want to apply the template to (user, group, or OU)
- Wait for sync. Done.
Beats 7+ pages of documentation of unforgiving syntax commands.
But yeah, if you've already got GAM sorted - or intend to - that's likely the best route. Getting familiar with it can provide a whole lot of additional functionality that may be of great value beyond just signatures.