db_datareader role along with selected table update I have given one data base user read permission only, using db_datareader role.
Now, I need to give the same user permission to update only one table (PROD.CustomerRelations).

Is there any way to give this permission ?

EDIT: 
I have tried the below method, but still I cannot update. I'm accessing SQL Server DB thru Microsoft Access. 

Allow update access to only 2 tables in a database schema

I guess the above method does not work because I used Deny for Delete, Update and Insert in the screen Database Properties -&gt; Permissions -&gt; Explicit permissions for [domain\user1]
grant update on object::PROD.CustomerRelations to db_user

https://docs.microsoft.com/en-us/sql/t-sql/statements/grant-object-permissions-transact-sql?view=sql-server-2017