Once you're in Dot Maps, click on the 'Edit Vendors' button
Once selected, another popup will appear, displaying all your vendors. From there, you'll have options to swap deployments on a vendor basis, change their associated color, or completely remove them from your deployment. We will focus on the first option, 'Edit Vendor Permissions'.
After clicking 'Edit Vendor Permissions', the next screen allows you to enter personal information (Name, Number, Email) and grant additional visibility options. By default, once they log in they can only view the deployment associated with their vendor. You can further expand their access to include grey space information as well as budgetary information.
After saving the Vendor's personal information, a user with a 'Dot Map Vendor' role will be created within your account, granting them visibility only to the information you created.