You can change the button layout in
your version of Bob's Calculator using the 'Edit button layout' menu
command. The following screen will be displayed, although, upon
entering this mode initially, the display area will be mostly blank:
When this screen is displayed you can drag/drop buttons from one place
to another, and you can also tap buttons to swap them between the
button location and the edit area. When a button has been moved
to the top its previous location is blank. Note that you
have to put the button back in its original location for the change to
take effect. To swap two buttons using taps, first tap the initial
button to transfer it to the top, then tap the destination button, and
that button will swap with the button at the top. Then tap the
old location again, and the two buttons will have swapped locations.
To assign a new operation or function for a button, move it to the top
and select either the "Op" or "Fn" button to edit that part of the
button a screen similar to the program edit screen will be presented,
where you can select the funcion. Note that any user-created
programs will show up in the leftmost list as a family called "User
programs".
When moving buttons around, take note that you can move BOTH the
operation and fn, or just one of them. This is controlled using
the popup list at the top right.
You will note that the Enter (or "=") button cannot be put just
anywhere on
the screen, because is cannot span across the top rows of buttons, and
it
may not extend past the bottom of the screen.