Multiple Approvers via Multi-select custom list

[Tim Cook]

We're using JIRA Software / server version 8.4 on Windows Server 2016.

I'm new the whole JIRA scripting.  I've been able to implement most of our workflow without needing to script anything.

I've read so many posts regarding custom multi-select list, haven't figured out how to start the scripting process.

We have the scriptrunner addon.

Here's what I'm trying to implement:

1. Multi-select list for the required disciplines.
2. Individual discipline user select & approval selection.

Implementation details:

1. Interactively, as the required disciplines are selected or deselected, the script will enable or disable the respective discipline user select & approval text select.
2. In order for the approval text select to be selected the user pick & user logged in, must be the same.
3. Saving the form locks the approvers who have completed the approval text selection.

Thanks in advance.

Tim