Her moving out; should I assist at all? take children somewhere why this transpires? any advice on moving out situation would help.
It depends on how the H feels about it. Some men say that can't be there b/c it is too hard and they can't stay in control of their emotions.
If a man decides to be there, I think it should be with the intent of overseeing what is taken, not so much about helping.
If the couple has not made a list of who keeps what, she may take nearly everything. I have seen women who dug up the bushes outside!
If the H has some sentimental attachment to particular items (such as your bedroom suit) then he may decide to be there to ensure those things are not taken. So many men will say they just don't think she'd take advantage. What? This is a wayward woman! Of course she's going to take advantage b/c she is driven by selfishness.
If you decide to be there during move out, be there to protect what is yours. Now, some guys feel they have to help with the heavy stuff. IDK, it's a fine line between looking like a jerk or a marshmallow......but to me, the importance is not about actually giving her your muscles and strong back as much as it is to look out for your property. My former SIL literally cleaned out their house and left one chair for my BIL. Nothing on the walls, no linens, no towells, not even a roll of toilet paper, nothing in the cabinets.......I mean NOTHING anywhere in that house but his chair. It made a profound statement, and he never thought she would have done such a thing.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
