Actionstep does not technically have any dedicated functionality to record an 'Anticipated Disbursement'. You will need to record it simply as a normal disbursement in Actionstep.
Once you technically incur a expense on behalf of your client, even if its only been 'ordered' therefore the the expense is 'anticipated' you should enter this as a disbursement transaction into Actionstep.
To help you to distinguish this disbursement from other disbursements you can choose one of these
- Put 'Anticipated' in the narration to identify it at the time of billing.
- Leave the 'unit price' as '$0.00' allowing you to enter the right amount later when you know the correct amount.