Something simplistic like that:

var myParas = app.activeDocument.stories.everyItem().paragraphs;
for ( var p = 0 ; p < myParas.length ; p++) if ( myParas[p].firstLineIndent > 20 ) myParas[p].firstLineIndent = 20;

The script will search between all the paras of the doc those ones with a first line indent greater than 20 (so 41,31 mm / 32,75 mm / 33,78 mm / etc.) and will apply a “20” first line indent to them!

2 code lines but 1 single click! ;-)

Best,
Michel, for FRIdNGE

Vincent,

Don’t say Vinny’s solution works great! … As all can see in your screenshot, it’s not true! …

[in French] … Mais bon ! Jamais trop tard en cette période pour croire au Père Noël ! ;-)

Best,
Michel

Vatrice,

Alas, I can’t answer you! … But, by curiosity, what do you mean by “three levels” [samples!]?

Michel, for FRIdNGE
michel.allio.fridnge@gmail.com

Pat,

Your question has been solved in another forum! …

Best,
Michel, for FRIdNGE
michel.allio.fridnge@gmail.com

William,

Alas, I can’t answer you! …

Michel, for FRIdNGE
michel.allio.fridnge@gmail.com

Jon,

Alas, I can’t answer you! …

Michel, for FRIdNGE
michel.allio.fridnge@gmail.com

It can be done with 2 Grep styles! …
Paras beginning and finishing by a bullet (or not), all the bullets in black, odd names in red, even in green!

There’s really something that bothers me more and more in all the forums:

When a guy [especially a scripter] works really hard to learn something [as awesome and magic as Javascript] and finally decides to share it without directly asking something in return, it’s really painful for me to read someone can “obliterate” his[her] name and however use his[her] work.

Lots here [and elsewhere] don’t appreciate my sincere outspokenness! … [and I don’t care!]
Aaron, I appreciate you enough [especially on your “Grep” knowledge and contribution on this forum] to not truly having something personal against you! …

This script, as simplistic for a scripter, was graciously posted by Loïc Aigon 10 years ago on Adobe’s InDesign Scripting Forum!

I hope he will appreciate someone remembered his signing and his real and appreciable knowledge!

Best,
Michel