In your automation - there are a few options for how you can fill in the [Assigned To] user field.
This example is assuming that [Assigned To] is a single User field.
You would be doing this in the Automation Action where you are Adding the Task, or Modifying the Task.
Option 1) Assign to a specific user with their email address- you can put in the email address associated with that Quick Base user - into the [Assigned To] user field, and it would use that user accordingly
Field = [Assigned To]
Source = Type a value
Value =
user@company.com This would be hardcoding and typing the email address directly in your Action.
Option 2) Assign to a specific user with a user field - you can change the value of [Assigned To] with a user field
Field = [Assigned To]
Source = Copy value from another record
Value = (a user field from the original Trigger record - such as Record Owner, Last Modified By, or a Formula User field that you have, etc.)
You can also use a Formula Text field which gives the email address of the user you'd like to assign, and that would work as well.
Hope this helps!