title: How to evenly increase number of users in 3 Thread Groups saving proportion of requests between them?
body: <p>I have 3 Thread Groups in my test plan.
  These Thread Groups must be with fixed request weights (for example 1st-50%, 2nd-40%, 3rd-10%).
  If I need to emulate constant number of users, <a href="https://i.stack.imgur.com/ZuK8R.png" rel="nofollow noreferrer">the solution in this post</a> which was given by @<strong>PMD UBIK-INGENIERIE</strong> works good if I set Loop Count as number (1, 10, 100 ect.). But the problem is when I set the check-box "forever" for Loop Counts, the proportion between groups is broken.</p>
  
  <p>Now I need to increase the amount of users, saving proportion of requests between my 3 groups, to perform the capasity assessment.
  All 3 groups must send requests evenly, in this constant proportion 50-40-10.</p>
  
  <p>If I use Stepping Thread Group, I can evenly increase number of users in each of them, but I can't set the proportion of request for them.</p>
  
  <p>Could you please tell me any idea, how to do this?</p>
  
  <hr>
  
  <p>UPD1.</p>
  
  <p>My screenshots with settings:
  <img src="https://i.stack.imgur.com/ZuK8R.png" alt="enter image description here"></p>
  
  <p>and </p>
  
  <p><img src="https://i.stack.imgur.com/jvUPq.png" alt="enter image description here"></p>
  
  <p>What is wrong?</p>
  
  <hr>
  
  <p>UPD2. The last variant (I have put numbers manually for each group) is (Thread Group1 - 50%):</p>
  
  <p><img src="https://i.stack.imgur.com/vxKME.png" alt="enter image description here"></p>