Statistica supports multiple installs of different versions of Statistica side by side on the same computer, using a built-in product named "Version Manager". Version manager is supported since Version 9 and is included in the product where user does not need to install Version manager separately. More information on Version Manager

1. If the two Statistica installs are of different versions, like 12.7 and 13.0. 

Version manager support multiple Statistica installs of different versions, since the binary installers for different versions are different. The user needs to have Administrative rights to install both versions on the same computer and can launch either version as "administrator" by clicking on the Statistica shortcuts and selecting "Run as Administrator".

2. If the two Statistica installs are of the same version but with different license content, like 13.0 CNET dataminer version and 13.0 Enterprise version.

Version manager may not support multiple installs of the same version, like both version 13.0, as the binary installer for 13.0 is the same. However, In this situation, one can choose to install the license version which contains more functionalities (e.g. Enterprise may contain most of the functionalities in Dataminer version) than the other. Then switch to the less functional version if needed by editing the license configuration file. 

For example, edit the license file to point to a different license server (e.g. switch from Enterprise server to CNET dataminer server, or backwards):Point workstations/clients to a different license server