You can use your Salesforce org to create the quote or proposal and Conga Platform to process the order by using the QTC profile setting.
When you set the QTC Profile on the order header to Conga Platform, the native order activation logic on Salesforce is bypassed, and the order is activated in the Conga Platform. After the order is activated in the Conga Platform, you are taken back to your Salesforce org, where you can see the order status as Activated.