At present, no. This is a feature we plan to add to Probate Plus.
In the meantime you'll need to enter additional pecuniary legacies for each part-payment. A workaround has been suggested by Probate Plus user Tony Morgan : "Here's another way of dealing with the payment of a pecuniary legacy by instalments: open a cash tracking account in the name of the beneficiary and simply do an inter-bank transfer into it each time a part-payment is made and, when the legacy has been paid in full, post it as being paid from the beneficiary tracking account. Hope this helps!"