To give warehouse access to the users, please follow the steps below.
Create a Role for the user to access warehouse.
Step 1: Please go to Inventory >> warehouses >> Click on Manage warehouses
Step 2: Click on Roles >> Click on New Role
Step 3: Enter the role name and give the permission of the role >> Click on Save.
Please note that, after creating a role you should assign the role to an user for managing the warehouse.