Webhooks to a custom api

Basic questions: MY Use case

1 I load four boards each with seven list elements and the put three cards each in the left most list column of each board. I use default swimlane and no checklists and add members to each board as I go.

2) When I move any of the cards, I want to see that update remotely in my api

3) When I create the boards lists and cards, I add their ids that wekan creates to my databases so I know which item is which and where.

Question 1: If I go into the wekan hamburger menu in the gui and create a webhook (url, token, name,) it seems like I cannot select which actions or which cards or which boards are connected to that web hook. Does that mean that for each webhook I create that ANY user change in the wekan GUI fires a webhook with data about what moved and where? Can I create webhooks without using the GUI? (register a webhook via the api)?

Question 2:

This page - https://github.com/wekan/wekan/wiki/Webhook-data - seems to show the data sent back. Is this correct? would the section named MOVE apply in my usecase? Are there any other controls on what fires a webhook or what is contained in them? If so, I have ONE api endpoint in my application that receives all activities through one webhook, and whether I want to do anything with most of them or not, I get them all? And I choose to ignore most of the webhook bodies and only process the ones I care about?

Question 3: Do I even get webhooks back as I create boards, lists and cards through the api? Is that the best method for capturing the ids of the elements created (right now I capture the ids as I create the elements)?

Question 4: I do not understand bi-directional webhooks. Is there any more documentation on them? Do I assume that rather than use the api to populate the boards, lists, cards, I am able to register and track through a bidirectional webhook? If so it looks like the payloads I would get from a gui create or change would be the same as the payloads I would send to enact the same GUI create change from the remote program. Is that correct?

Question 5: What URL do I use to connect birectional webhooks (where do I send)? Do I authenticate the same way? How is the bidirectional webhook identified (url) as the target I am sending to (or do all web hooks I create in the gui just accept any command from any registered url?) Does only the token (auth) of the sending webhook determine whether in incoming webhook obeys the command or not? Do I get acknowledge or rejections replies back from the incoming webhook like I would with the incoming api?

As always thank you again Lauri for dealing with my long questions. :)

update: I see the webhook but only if the receiving api server online at aws. Trying to figure out how I do development with my systems behind my firewall. Was looking at smee. Any suggestions?

I also saw a post about "activities" https://github.com/wekan/wekan/pull/1199 which suggested I can be more selective with activities that trigger these hooks. Is that historical engineering or do I just not see the activities selection and if so where do I look.