Select the newly added PCP catalog and select Subscribe to Catalog option
Click Next to continue
Verify the certificate and select checkbox and then continue
Now the given Catalog is successfully downloaded and subscribed to SCCM. Now the updates publishing process will initiate automatically.
You can check the status of updates publishing process in SMS_ISVUPDATES_SYNCAGENT.log file under C:\Program Files\Microsoft Configuration Manager\Logs Directory
After Successfull publishing, you need to initiate SCCM-WSUS sync from SCCM console under All Software Updates tab by selecting Synchronize Software Updates option
After Successful synchronization, you need to select the products from Software Update Point to see published in updates in SCCM. Navigate to \Administration\Overview\Site Configuration\Sites Right click and select Software Update Point
Under Products tab the newly published Products are listed. select the required products and again initiate SCCM-WSUS sync from All Software Updates Tab
After the Successfull synchronization the Meta-Data of third party updates are listed under All Software Updates.
Select the required application and right click and Select Publish Third-Party Software Update Content to download and publish full content of update to SCCM You can check the status of updates publishing process in SMS_ISVUPDATES_SYNCAGENT.log
After publishing full content of all updates, Again initiate WSUS-SCCM sync, After the sync you can able to deploy the updates to all client machines.