What timespan or output options to use in allocation step to get ending balance as of 6/30

We are using BAL timespan (that is current balance incl period 0) for the pool and target. The allocation run control is as of date 6/30/2020. We want only one allocation journal created as of 6/30 but is creating six journals (one for each period) with same lines and amounts. How can we get the output to create one journal as of 6/30?