Venstar Hold

There is a thermostat feature that I have seen on a couple thermostats that I previously owned. When the thermostat is set to follow a preprogrammed schedule and you increase/decrease the temperature setting, it engages a hold with a preset hold time, usually 30 minutes and a way to adjust the hold time. I was considering suggesting this feature for the Venstar integration but I noticed that the installation page describes a hold mode being available.
I am not sure how to implement this. Is hold: entered in the preset area? I have tried it there and set it to ‘true’ but I don’t see the effect.