Hi Nikhil,
If I am understanding your question correctly, You need to add an Extra Block Like Report and Additional Functions to display your custom links?
If that is the case you can achieve it by Enhancing the Component WCC_SLS_CYC
Add An Extra Component usage for Component CRMCMP_GS_WC and InterfaceView IFVGroupLinks
Then enhance the component controller and redefine your wd_usage_initialize.
In your case from the screen shot I assume component enhancement and redefining wd_usage_initialize had been already done for showing up the Additional Functions Block.
In wd_usage_initialize you need to set the GROUP_ID with the right value of your Group ID / Logical Link ID.
You also need to add the interface view you added with the new component usage to the SalesCycle Overview Page and then configure it your custom configuration as well for it to be visible on UI.
Hope this helps.
Regards
Vinod