Configuring the Populate the selected User Picker field with the Approvers post function

• Choose   →  Issues → Workflows or click Create Workflow function on the v6-Advanced administration screen
• Edit the concerned workflow
• Select the concerned workflow transition (transition on approbation or transition on rejection)
• Select the Post Function tab
• Add Post Function
• Check the option Populate the selected User Picker field with the Approvers (Herzum Approval) 

• Fill the parameters: 

1. Super User (Required) - User used to put the approvers into a custom field:  

   1. The Target field will be updated via the selected user credentials. 

2. Target Field (Required) - Add Approvers on selected User Picker field: the approvers usernames will be inserted on the selected field

3. All Approvers (Optional) - If enabled, the Target field is populated with all requested approvers from all the approval stages: 
   1. If All Approvers is Off: the custom field is populated with the approvers requested on the destination workflow status for the current issue
   2. If All Approvers is On: the custom field is populated  with the approvers requested on each workflow status for the current issue