Contributor Permission level with Workflow Variables created from NWC Automate Start menu

I'll try to make this short winded. The problem or what I want to solve for is having dynamic text (variable) within an NWC workflow form that can change dynamically of something exterior of the Form/Workflow within a Label, Description, or potentially other where a user whom is not a workflow designer can contribute without changing anything or accessing the workflow itself. Let me explain further on the architecture...I'm hoping for a "Contributor" whom owns the process but does not need access to the workflow, think almost a permission level between a participant and designer, where they could potentially see the workflows they are a Contributor of in NWC Automate menu or My Nintex where they can update certain variables tied to the workflow (Maybe this is a seasonal form and they want to update a season or text descriptor that has an expire date for form entries, These for simple sake can just be string variables. By the way this ties to one of my other requests to have expire dates/turn on&off dates for forms where the url is accessible or no longer accessible. Thanks, Tye