RT and Set Delay

[LN400]

Looking at the RT flight computer's expanded view, there is a small box in the lower right where one can set an additional command delay. Any insight in what it's for and how to use it properly? Testing it here but it's not easy too see how it's supposed to be used. Also there are an "insert right after this" button on the active command exe list. How do I use this?

Edited September 14, 2017 by LN400

[Zophos]

The additional delay is to allow you to schedule (now) a command to be executed later.  For example, you may want to schedule "trigger an action group" for a time when you're at periapsis of your flyby of a planet, but on the far side from Kerbin/Earth and therefore without full control of the vessel. This might cause science collection, fire orbit-insertion retros, etc.

The "extra" part of the delay is so that you can precisely schedule the command, rather than have to rely solely on signal delay.