The functionality you are asking about is built into the baseline home.htmpl files. In order to activate it, you need to have an NX variable defined: @NX_CATALOG_SERVER
If this variable is not set, please use the pdm_options_mgr command:
pdm_options_mgr -c -s CATALOG_SERVER -v CATALOG_SERVER1 -a pdm_option.inst
pdm_options_mgr -c -s CATALOG_SERVER -v CATALOG_SERVER1 -a pdm_option.inst -t
Both of these commands will be needed to install the NX_CATALOG_SERVER variable. The missing "NX" in the pdm_options_mgr is intentional (command "pdm_options_mgr -c -s NX_CATALOG_SERVER" is incorrect)
Once you run these commands to install the variable, cycle SDM Services.