@Jkay, here are the steps you should follow:

1. Get familiar with the material about "SQL Server Agent Fixed Database Roles" , that @gbn has provided.

2. Decide which one is good for you

3. Use a script similar to the following one (but first choose specific msdb role) to achieve what you ask for:

   USE [master]

   GO

   CREATE LOGIN [DOMAIN\user] FROM WINDOWS

   GO

   USE [msdb]

   GO CREATE USER [DOMAIN\user] FOR LOGIN [DOMAIN\user] GO

   USE [msdb]

   GO

   EXEC sp_addrolemember N'SQLAgentOperatorRole', N'DOMAIN\user'

   GO

Here are the steps you should follow:

1. Get familiar with the material in SQL Server Agent Fixed Database Roles.

2. Decide which one is good for you

3. Use a script similar to the following one (but first choose specific msdb role) to achieve what you ask for:

    USE [master] GO CREATE LOGIN [DOMAIN\user] FROM WINDOWS GO USE [msdb] GO CREATE USER [DOMAIN\user] FOR LOGIN [DOMAIN\user] GO USE [msdb] GO EXEC sp_addrolemember N'SQLAgentOperatorRole', N'DOMAIN\user' GO