The repli-mat is available for anyone to create an inter-mission storyline that the crew can take part in. It is intended to alleviate boredom in between the official missions, and should not be used in preference to them.
If you post here, you are expected to make the official missions your priority, as those are the ones that count. You should also be aware that anything that happens in the repli-mat is considered "non-canon" in terms of the SIMM storyline, and so can have no impact on the main missions.
As usual, the Shadow Fleet Rules apply.