Hi Louisev_v4,
If there are staff that should not have access to move items, it should be read only on their end instead. With that, I would recommend checking the roles and customising them; it is worth checking. For example, a user with an inventory management role has the ability to move items even though they're showing as read only on their end. If you click on 'Manage Roles' from the user access window, you will see that there are more access options under Inventory Management that you can customise. I have attached a screenshot below for your reference.

If there are other roles ticked such as Cards, Banking, Inventory Management, Payroll, Purchases, Sales and Time Billing, ensure that Locations and Move Items are unticked.
Feel free to post again anytime if you require further assistance.
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Best regards,
Doreen