Multiple realities
(covers information from several alternate timelines)
A welcoming ceremony or welcoming reception was an official ceremony of greeting for an individual or delegate.
In 2269, James T. Kirk recommended that Ardanan high advisor Plasus dispense with the welcoming ceremony due to their urgent need of zenite. (TOS: "The Cloud Minders")
In an alternate timeline 2370, Jean-Luc Picard asked Deanna Troi to recall what happened after his welcoming ceremony upon taking command of USS Enterprise-D. She stated that there was a reception in Ten Forward, where she introduced him to Worf and the other senior officers. (TNG: "All Good Things...")