Fusion Scenario that shares a project with assigned users

[OmahaOmaha]

Hi All,  I'm running into a bit of a wall with this Fusion scenario I've been asked to build.  The purpose of the scenario is to share the project with users assigned to a task in the project. However I haven't been able to locate a module that would allow me to share the project with an assigned user.  Would anyone know which module I could use to do this?

[Lawson02]

It would most likely be the custom api module or maybe even the misc action module. Here is a post that refers to using the custom api module that should help. If all users are assigned to tasks on creation you could do that there but if not I would just have a scenario that looks at when task assignedToID changes and exists the user assigned has the project shared with them.

[Sven-iX · Accepted solution]

Hey Omaha
Project settings should be used for this - what's the reason to scenario-ize this functionality? 

There is no single module for this: 
You have to get the users in assignments, and for each you'd add an access rule. Like Lawson said it's customAPI calls and creating JSON payloads. I'd advise against it if you can avoid it (it's OTB functionality and a bit of a nuisance to work with via API)