Select File Options from the file menu.
You'll find a setting there where you can specify what layout should be displayed when the file is first opened.
It can also specify a script to be performed when the file is first opened and such a script can include a go to layout script step.
A an additional complication is that the layout specified with either of these two file options can have script triggers such as OnRecordLoad, OnlayoutEnter, etc such that going to that layout performs a script and such a script could result in an unexpected change in layouts if it includes a go to layout step.
Thank you so much! This was the perfect answer! Worked great!