Multi-Measure Rests

You can choose to apply the "Classical Look" to multi-measure rests by selecting "Force Classical Look". That means: classical rest symbols and also multi-measure rest symbols in 1-bar measures (see also image 2 below). By default this option is unchecked.
If this option is unchecked, the multi-measure rest style will not be changed.
The measure number range (e.g. [24-34]) below a multi-measure rest can be very helpful for the player. But it should not include unnecessary information either. So it makes sense to not show it on every multi-measure rest, but only on the longer ones and for example after each double bar line (Option: "Show Measure Rang After Double Bar Lines").
The number of empty bars for hiding/showing measure ranges can be set twice:

a.) Absolute: "Always Hide Measure Range If Less Than X MMRest Bars". By default it's set to 3.
b.) Relative: "Hide Measure Range If Less than X Adjacent MMRest bars" also takes into account measures before and after this multi-measure rest. By default this is set to 10.
For example two multi-measure rests of 3 and 8 measures each will show the range (3+8=11), but a single 8 measure MMRest will not show the range (see image 1).

The measure range can be activated by selecting "Show Measure Number Range on MM Rests", but it currently can't be hidden if it is already visible.

Image 1: Adaptive Measure Range Visibility on Multi-Measure Rests: Visible if at least 10 adjacent measures and after double bar lines.
To faciliate reading you can select to hide tempo alterations in multi-measure rests: select "Hide Tempo Alterations in MM Rests". Depending on the content, this may be appropriate or not. This option is unchecked by default.
The sub-option "dito., But Only If No Notes Follow Until End" allows to hide tempo alterations at the end of the file if no notes follow until end. This is usually "safe" for the player.
This sub-option is activated by default.

Image 2: Some Multi-Measure Rest Settings
Right-aligned tempo marks in the last measure of a multi-measure are typically being swallowed by Finale's multi-measure rest creation algorithm.
Alternatively Finale splits the multi-measure rest and adds an extra empty measure with the tempo mark. While this may be more clear in some cases, it might be easier to read if the symbol was visible at the end of the multi-measure rest (see image 3 last line). To activate this feature select "Show Right-Aligned Tempo Marks on MMRests".
Make sure the expressions are right-aligned, attached near the end of the measure and are set to "Break MM Rest".

Image 3: Tempo Marks at the End of Multi-Measure Rests