How to create a schema in RCU for Forms 12c upgrade

I am preparing to upgrade from Oracle Forms 11g to 12c.

I am using this document: https://docs.oracle.com/middleware/1221/formsandreports/install-fnr/upgrade_forms.htm#FRINS420

There is an instruction to create a schema in the RCU as follows:

5.3.1 Re-Configuring the 11g Domain using the WLS Reconfig Wizard.

NOTE: In the 11g, Forms did not require the RCU schema, but starting with 12c all the WLS domains require RCU schema to be setup. Hence, before you perform these steps, ensure that you create a schema  ( standard schema for 12c Components ) in RCU before you run the WLS Recofig wizard.