I'm not sure what you mean exactly.
But objects in a flowed subform are automatically ordered by their position within the hierarchy tree and the flow direction set for the subform.
Such objects can be easiliy reordered with drag'n drop in the hierarchy tree or in the design window.
When you grab an object and move it Designer will show you a black line which indicates the position where the object can be inserted.
When you set your page 1 subform to flowed, and then create another flowed subform inside of it (so that you can place your text fields that you want to flow), it becomes impossible to adjust objects inside that field. If I try to move any object inside that flowed subform it will toss the triangles on all the corners telling me I can't do that. I also can't adjust the page 1 subform once it is sit to flowed. Now if I add positioned subforms inside the flowed page 1 subform it isn't an issue. Something is wrong with the program.