Boot On Power Delay option?

[massta]

Great forum, this is my first post.

I'm wondering if anyone has seen an option for delaying the Boot On Power?
We have computers set to boot-on-power but when the UPS tells the computer agents to shut down, they boot right back up even though the UPS is on battery.

We'd like to give the UPS enough time to shut it's self down.  Of course this all needs to be automated, it's a giant art sculpture with computers housed inside.

I'm going to see if the UPSs can tell computers to hibernate (state S4) instead of shutdown (S5).  That should at least put them in a safer mode for when UPS cuts the load or pulls the plug so to speak on the computers. 

Any help is much appreciated.  Running Windows 10 and Tripplite UPSs.
Thanks!