Hi, I want to add one button in treeview to sync many records from another app API .

Specific activities are as follows
1. Add a button in the list view (can replace the button with the menu item also) to call server action
2. When the button is pressed, there is a loading panel when calling the server action
3. After the action is successful, reload the List view and turn off the loading panel

I would like to ask if I can find any documents to learn how to do the above tasks? Or can you show me how to do it?

My server action is a function in the model.

Here is an example image link of the position of the button or menu item that I want to add:

https://www.screencast.com/t/9GbA8bxJu8P2