Thank you for your contribution! It is interresting to see several methods to do that! 
I had seen this tools, but I thought it wasn't as flexible as you present in your video 
It is really interesting for curve path! I don't succed for the moment with DC...
Nevertheless, I wonder if spacing between seats is adjustable?
Thank's a lot!
Hi!
I've just found the solution to my problem! Still in a linear system, but it works perfectly!
In fact, users edit the number of seat (it is simplier), and the distance to the bench. All is put just with divisions of the total length of th DC.
I have to try it on a curved path now!
Thanks a lot!
Best,
Valentin
Yes! That sounds pretty good!!! The value enter by the user is effectively a minimum...
I will try it tomorrow! I hope it will work.
Thanks a lot!
Yes, this is what I did at the beginning. But in fact, the logic of the spacing is
"seat - spacing - seat - spacing - seat - etc."
and not "seat - spacing - arm - spacing - seat - spacing - arm - spacing - seat - etc.".
The length Y of the arm don't have to be count in the total lenght of the main component.
The other problem is when I want a length equivalent to 4.5 seats for instance. SU shrinks to 4 seats or grows to 5 seats. But how can I have a lenght of 4.5 seats, with 4 seats, and the 0.5 seats remaining distributed in the spacing between the seats?
I think your idea of using the aid to positioning is very good. I will think with this!
Best,
Valentin
Thank you for the tip of the size! ^^
Yes, it is necessary to separate the arms from the seats. The arms have to be exactly in the middle of 2 seats... I know it do a lot of computation, but I can't do otherwise...
That's right! 
Here is my file : Seats.skp
The problem is that the DC doesn't take the right lenght, and when there is few seats, spacing is too big... and it really doesn't work with one seat!
New problem!
I want the spacing between my seats that are duplicated either variable for my dynamic component takes exactly the length I want. I do not want it shrinks or grows ...
My approach for now is to give the user the opportunity to enter a minimum spacing between seats, and then the modulo copy number is distributed between the seats created ... However, the component does not always take the exact value that I ask ...
Does someone have any ideas?
Thank you!
Valentin
Hello!
Sorry Gaeius, I didn't see the subforum... Thank you for putting the post in the right section! ^^
I progress in the reflexion, and I have found the equation for spreading the seats along an arc : it works on excel for the moment. I use the parametric equation of a circle which is :
x=a+r.cos(O)
y=b+r.sin(O)
It is always a little bit hard in a linear system because I have to set the spacing between the seat and the armrest. I am not so far from the solution I think...
I'll keep you updated on the progress!
Hello!
I would like to create a dynamic component that duplicates itself along a path, which is moving according to the normal path.
I saw that the plugin modelfunction can do it, but is it possible with the dynamic components?
My goal is to place the seats in a theater, and the bleachers are curved ...
Thank you for your attention,
Valentin