Glad I could help. After completing all of the Adobe Fusion tutorials I learned the rest of my knowledge through trial and error and the community forums. In the future if you have a question I would recommend making it short, concise, and clear while also providing all relevant info and screenshots...

When I need to create a webhook that indicates a status is changed to lets say "NEW" I need to add status = NEW and status Changed. Adding the second clause may eliminate duplicate events.

Don't check sequential processing unless you require it sequentially. Also please show me the error message and what your scenario looks like.

Webhooks can build up queues when they are left off during testing or when they are scheduled to run once per day. When they are turned on, the queue will automatically run all events in the queue asynchronously (can change to sequential in settings). When it is scheduled, the amount from the queue ...

What other issues, I might be able to answer some here

If you are using an instant watch event saying, trigger when the issue is approved, you can pull the userID from the event time bundle at the bottom. If not I suggest looking into the API to find something https://developer.adobe.com/workfront/api-explorer/  

Update: I used the API module to subscribe user(s) to an object. If anyone has a better way please enlighten me. Also I forgot to change the obj code from proj but it would be whatever obj you're subscribing to. 

Using Fusion how do I subscribe a user to a given project? I looked at the API but I can't seem to find a module add a subscriber and I don't know what API call I would use to add one.

You cannot change who the email comes from. The email comes from the account associated with the connection to WF. I would create a bot account connection or have an automated message on the update. Our bot connection is called System Process and Adobe support can help you set it up. Email notificat...

This is what you should see, I didn't have it directly because the servers were down for me yesterday. Fill it out like I have listed above. Select Program for the field. Put the Program ID in object ID. The message in update text. Lastly the specific users/team to @ in notify.