How do I select and copy a group of about 100 records?
To do what with the selected record ?
To export them ?
To duplicate them ?
After a find, you'll have a found set of records that can be exported or duplicated.
There is a script step under 'Records' that is 'Copy all records'. You can include that as a shortcut in the scripts menu, or a button, as usual. Then just go to your destination and paste.
It also works (on PC) as Control-shift-c.
Note that you can do whatever you want with the layout order, tab order, etc on the screen - they will always copy in the field creation order.