Yes, it will add a little extra time when you initially submit your packet as compared to the previous process in TiM.
Our goal is always to keep processes in TiM as short and simple as possible. In this case, though, we wanted to strike a balance that considers both speed (less steps) and consistent accuracy (more steps), and which favors the latter. This consistent accuracy will ultimately save you and your employers time by reducing errors and rework before they happen.
For more information regarding the 2020 W-4, please visit IRS.gov.
Also see: How to complete a 2020 W-4 in TiM