The following before/after images give an overview of Perfect Layout's tuplet features.
The Finale documents of these tuplet examples can be downloaded from the example page (Example 4).

Image 1: Before applying Perfect Layout

Image 2: After applying Perfect Layout

All tuplet options in detail

"Force Tuplet Brackets on Ambiguous Tuplets" adds tuplet brackets on beamed notes when the tuplet doesn't start on the first note of the beamed group and thus is difficult to read.

Image 3: Left: Original, Right: Added Brackets

Another tuplet feature which can't be unselected is automatic secondary beam break insertion as in image 4:

Image 4: Left: Original, Right: Added secondary beam break

"Force Tuplet Brackets on Unsymmetrics Tuplets" adds tuplet brackets to unsymmetrics tuplets (i.e. if the duration of the notes is different from left to right than from right to left). In these cases it might be difficult to decipher the reference duration of the tuplet.

Image 5: Left: Original, Right: Added brackets only to unsymmetric tuplet to not mix it up with a 16th note tuplet

"Increase Tuplet Number If Max. Note Duration Is Shorter" changes the tuplet number for better readability if it doesn't match the note durations. I.e. six 16th notes with a "3" tuplet number would be transformed into a "6".

Image 6: Left: A five 8th note tuplet with 16th notes becomes a ten 16th notes tuplet

For better readability tuplets on extreme low or high notes can get their brackets on the note side (instead of the stem side).
Check "Put Tuplet Brackets on Notes Above Staff Position X on Top" for that feature. X is the minimum note position where this feature is activated:
1 means the first ledger line, 2 the space between the first and the second ledger line, 3 the second ledger line and so on.
By default this option is selected and affects notes on the second ledger line and above.
This feature always works on tuplets above and below the staff.
To switch off this feature, set the value to a very high value (e.g. 30 instead 3).

Image 7:
Left: Original, Right: Tuplets on extreme notes are put on the note side and get brackets (X=3)