Default Value of Combobox to Current User

Default Value of Combobox to Current User

  
Hi,

I am trying to store inventory settings for each user in an entity titled Inventory.  It's storing attributes such as target stock level, reorder level, and reorder quantity.  I have created a one-to-many relationship table between User_Master and Inventory, as each user will have many inventory settings, one setting per part.  I dragged the UserMasterId onto my "New Inventory" web screen but I want it to default to the currently logged in user.  It should work like a "Created By" or an "Updated By" where it records the current user.

I appreciate any help, thank you!

Chris
Update! I got what I wanted using a query.