For running J!5.1 you must https://fabrikar.com/forums/index.php?wiki/update-from-github/ or include the new file manually https://fabrikar.com/forums/index.php?threads/joomla-5-1-and-fabrik-cannot-find-files-error.54473/post-285151 See also Announcements
Please see our announcement here.
perfect ... I'm going to investigate ...Have a look at Fabrik form groups
http://fabrikar.com/forums/index.php?wiki/index/#fabrik-core
http://fabrikar.com/forums/index.php?wiki/groups/
and at custom CSS, custom templates
http://www.fabrikar.com/forums/index.php?wiki/form-and-details-templates/
good...Have a look at Fabrik form groups
http://fabrikar.com/forums/index.php?wiki/index/#fabrik-core
http://fabrikar.com/forums/index.php?wiki/groups/
and at custom CSS, custom templates
http://www.fabrikar.com/forums/index.php?wiki/form-and-details-templates/
Very good...Have a look at Fabrik form groups
http://fabrikar.com/forums/index.php?wiki/index/#fabrik-core
http://fabrikar.com/forums/index.php?wiki/groups/
and at custom CSS, custom templates
http://www.fabrikar.com/forums/index.php?wiki/form-and-details-templates/
What do you mean with "sort the groups"?
You can define the group order in form settings "Groups".