Latin scansion

I have a Latin textbook with a section on meter and scansion of poetry. I believe this is mostly a Formats matter, although it is a non-English language.

My main questions are:

• If the scansion marks (_/ foot and _/_/ caesura) are printed above the line at the same level as the syllable stress marks, should the scansion marks be moved down and embedded in the poetic line rather than above it with the stress marks? (inferring from BF2016 Sample 13-12)
• Since the caesura marks are above the poetic line, the spacing is not super clear. If they appear within a word, should they be unspaced from the surrounding letters? And if between words, should they be spaced?

Guidelines for line division from BF2016 (13.9.4.c-d):

• A line may not be divided at a foot or caesura symbol if it is unspaced within a word.
• A foot (the group of letters between single slashes) may not be divided between lines.

There is no way to follow these two guidelines in the attached example. In the first line of poetry, the first three foot marks appear within words and this causes the first possible place to break the line to be greater than 40 cells. Would it be a better compromise to divide a word at a foot mark to keep the foot together OR divide a foot at a space between words to keep the words undivided? In my sample, I have divided the words "puer" and "umerōs" at the foot mark rather than dividing in the middle of the foot.

Thanks for your help!

Best,
Rebecca