Below are the steps needs to be performed as part of SAP post installation activities

1. Login to ddic username and execute SICK tcode

2. Goto RZ10 tcode and import the new profiles and add profile parameters according 
to your requirements

3.Execute slicense and install license for your system

4. Go to SE06 and select Standard Installation option hit execute, Click yes to initialize
 your CTS settings

5. Now goto STMS tcode and configure TMS

6. You can configure current system as DC(domain controller) or you can include into
 another domain, in this case I configure as domain controller

7. Now install SGEN i.e SAP load generator

8. Now go to SCC4 tcode and create a new client and perform client copy

9. After you created new client and make sure you copy ddic username and create new 
admin username and lock SAP* and DDIC usernames

10. Additionally you need to perform SAP Kernal upgrade as well as patching for OS and
 DB and check official installation guide in market place