Take a look at the documentation on Azure SQL Database - Access Control - Authorization. It explains possible permissioning types with Azure SQL Database.
To see the SQL instructions for making changes to these permissions, see this documentation about SQL - Security - Database Permissions.
Apply server-level permissions to login and database-level permissions users with the GRANT, REVOKE and DENY instructions. For example:
GRANT SELECT ON OBJECT::RecursosHumanos.Empregados TO Alessandra;
REVOKE SELECT ON OBJECT::RecursosHumanos.Empregados TO Alessandra;
See here several examples of how to recur permissions information.