Force HMRC ID to match Employee ID

Paycircle is currently automatically creating HMRC IDs in the background. We are trying to align the number sequence with new employees within PeopleHR, but we are finding when new employees transfer across, the IDs are not always matching.

Before an employees' first pay I would like to be able to set the Employee ID and it automatically update the HMRC ID to match, assuming it is of course a unique number.