---
title: "Multiplicity \"9 PC\" confusion"
canonical: "https://support.stardock.com/space/SHC/1287815213/Multiplicity%20%229%20PC%22%20confusion"
format: markdown
---
As a reminder, MP is licensed per Primary; Secondary computers do not require activation.  The '9' refers do the Primary itself and the 8 Secondaries it can control.

In other words, if you need 3 Primaries controlling any number of Secondaries, you will need 3 purchased licenses.

If you only need one Primary at any given time, but it could be any PC, you would demote (deactivate) the Primary and promote (activate) a Secondary to a Primary.