---
title: "How to create multiple sub-tasks and set respective assignees"
canonical: "https://support.appfire.com/space/SUPPORT/89134595/How%20to%20create%20multiple%20sub-tasks%20and%20set%20respective%20assignees"
format: markdown
---
This article explains how to create multiple sub-tasks and set a different assignee to each task based on the user selection in the multiuser picker custom field. The solutions suggests using the *Create on Transition* app to achieve the task.
## Step-by-step guide
While creating multiple sub-tasks during transitions in a workflow, these sub-tasks can be assigned to different users by using the *Create on Transition* app.
| **Detailed steps** | **Screenshot** |
| --- | --- |
| Login as a JIRA Administrator and click > Macro (inline-media-image)
* ****> Issues****.* |  |
| Select *Custom Fields* from the left sidebar. |  |
| Add a custom field of type *User Picker (multiple users) *and click **Next**. |  |
| Enter the name of the field and description (optional) int he respective fields, and click **Create**. |  |
| Configure this custom field in the respective workflow screen. |  |
| In the *Workflows* tab, select the intended workflow and click *Edit*. |  |
| Select the transition for which you want to create the sub-task. Select the *Post Functions *option. |  |
| Click *Add post function*. |  |
| Select *Create* *Sub-task* from the available options. |  |
| Add the post function and click **Update**. |  |
| Click **P****ublish**. |  |
| Create a new issue and enter the users in the multiuser picker custom field. Run the transition to create sub-tasks.
You notice that sub-tasks are created based on the number of users specified in the custom field value. At the same time, sub-tasks are assigned to the users. |  |
> ⚠️ It is recommended to test the mentioned post-function in a non-production environment before implementing it in the production environment.