2 different Draftsight Enterprise serial number inside 1 SNL

Hello,

Our customer has a Draftsight Enterprise 2019 serial number without subscription with 2 licenses.

Now they want to buy new 3 licenses.

Question is, can we install these 2 different serial numbers into SNL 2019, and have 1 SNL 2019 pool with 5 licenses?

We can do this with PDM, but I am not sure if we can do this with Dratfsight Enterprise.

Regards