If you already have an installation of Serena License Manager, you do not need to install a new system for Serena Release Manager. However, you must do the following:
Ensure that you are running a supported version of Serena License Manager as indicated in the Serena Release Manager Readme.
After installing the rest of the products in the suite, apply the licenses as needed. See Applying Licenses.
Please continue to Installing Serena Business Manager.