Unable to have the account derived from the DFF on the Misc issue transaction in Inv Mgmt

Hello we have a requirement where the client needs to Misc issued it out the quantity and it needs to billed to the particular employee. The employee details is been considered on the Misc Issue line level under the DFF area. Now, whenever the user select the Misc Issue as a transaction and then further add the employee which needs to be billed the segment account needs to be override. Now as per the accounting rules are concerned we are unable to find what type of source needs to be written in the Offset account.

Please find the relevant screenshot for your kind reference: