Unanimous Approval Help Urgent

[lsateeshk]

In Approval Process Step 3 Where i select Users for Approval and in the 4 th option where it says 

Automatically assign to approver(s). 

Step 3 of 3

Step 3. Select Assigned Approver

Specify the user who should approve records that enter this step. Optionally, choose whether the approver's delegate is also allowed to approve these requests.

Select Approver

Related User  --None--Created By  Last Modified By  Owner  Queue   Related User  --None--Created By  Last Modified By   Owner  

Let the submitter choose the approver manually. Automatically assign using the user field selected earlier. (Approvers List)  Automatically assign to queue.  Automatically assign to approver(s).   Queue   User

User

Add Row Remove Row

When multiple approvers are selected:

• Approve or reject based on the FIRST response.
• Require UNANIMOUS approval from all selected approvers.

The approver's delegate may also approve this request. 

how to i Add rows Dynamically using Apex . i have the List of users obtaining according to my Business Logic 

[sfdcfox]

You can't modify metadata via Apex Code (at least, not in the manner you're looking for). Your code would have to be dynamically adding (and removing!) rows for every call, and I'm pretty sure this wouldn't be ideal later. You will probably want to make nearly identical approval processes, or use multiple steps that have entry criteria per your business logic.