There are some restrictions on the placement of fields and columns

Certain fields and columns are designated only for use on certain pages of a form. For example, a field designated for "Every Page" can be placed anywhere on a form, but a field designated for the "Last Page" must appear at the end of the form. In some cases, more than one version of a data field is available on a single form layout. This allows you to use data from the same field in different ways on the same form.