Go to the page where you want to use the right-click context menu and add a group focus element to the page. The ideal width is 525px, height is 230px.
Put the right-click context menu inside this group focus. Aligned to the left and up. X: 0, Y:0
Select a reference element for the group focus.
Then copy the disabled event (Right Mouse Button is clicked down) in the right-click context menu to your page, paste it into the workflow tab of your page and enable it.
Here Bubble doesn't know which element to show. Therefore, you must select the group focus element in both actions.
This event has two actions. Reposition and Show. If you want to show the menu anywhere, right-click, and use it as it is, if you want it to appear only according to the reference element then you should delete the Reposition action