In order to move children into or out of a classroom, you must have a Site Admin or higher permission level, and access the management page through the web portal

Inside of the Students menu, you will see your assigned Site, or the first Site alphabetical if you have multiple assignments, and the children inside

In order to manage the children's classroom locations, begin by navigating into the Unassigned tab if the children do not have an assigned classroom already. 

If your children are already assigned to a classroom, you can move them to a new classroom by navigating into the classroom they are currently in

To move children into a new classroom, select the children you want to move by clicking on their check boxes, and then pressing Group Edit, and Update Class

Fill the prompt with the new classroom, and if you would like to remove them from the current classroom, and press submit to finalize your changes!