Some children do not like to stand too close to their friends or their other children when they're lining up. If you know that particular child has difficulty, make sure that you let them get in the front of the line or the back of the line, and if being in the middle of the line is way too much for them just don't put them in that stressful situation, or if you see them always trying to go to the end of the line maybe wait and call their name last when they're lining up.
Another good strategy to use is to get the kids to line up doing a lot of different activities and get that motor movement patterns out when they're lining up to go to the next transition activity.
Transitions can be difficult for children, if you know that you have a child in your classroom that has difficulty with transitions, really try to make sure you prepare them, give them a five minute warning, flash the lights, or whatever you guys usually do in your classroom to give them that warning is really beneficial for them.
When you're walking through the halls of your school and you're transitioning from either PE to the classroom or music or art, you'll notice that some kids like to either be touching other kids or leaning against the wall. A lot of schools like to have rules about not touching the wall, but if it's allowed let the kids lean to give their body a little pressure.
We want them to keep their hands to themselves and not bug their friends, but if they're needing that deep pressure, while they're kind of waiting to transition to get to another place. If it's okay, according to your school, let them get that pressure against the wall or have them do hops, while they're waiting, or have them do some hand squeezes or even cross their arms and then that way they can give themselves some deep pressure while they're waiting to transition.