Please follow the below steps for installing WAC.
- Install IIS first on Domain manager (Check IIS is installed on existing Operating System).
- Launch Setup.exe from ITCM DVD/ISO
- Click on the language you want to install.
- Click Install ITCM
- Since you are running setup on already installed ITCM domain manager, you will get Modify option in next window.
- Select Modify and click next .
- Select product functionality window display the already installed functionality.
- Click next
- Select features windows display the installed features.
Choose Web Console, Web Services.
- Click next and verify the ITCM installation directory ( it will automatically pick).
- Click next to complete the web console installation.
- Open Internet Explorer and run http://Localhost/wac to open the web console. Use local administrator user id and password to login.