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Hosted Feature Layer Views are easy to create from a Feature Service, documentation can be found here: https://doc.arcgis.com/en/arcgis-online/manage-data/create-hosted-views.htm . Esri also describes how Hosted Feature Layer Views can be used to provide different views of the data for employees vs. contractors in this blog post: https://www.esri.com/arcgis-blog/products/data-management/mapping/getting-started-with-hosted-feature-layer-views/ . Note that WSG Inventory Management System does not use Web Maps per se, and thus the pattern for implementing Hosted Feature Layer Views is even easiera little less complex than the diagram in the blog post linked above:
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Keep in mind that multiple Hosted Feature Layer Views can be created from a single Feature Service, so your implementation may look more like the image below in which data managers have access to all data in the master Feature Service, Cruisers have access to all data that are a part of active cruise projects, and contractors only have access to those data that have been assigned to them or their contracting company.
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