I have a layer with two fields: "SafetyIssue" and "Status"
Safety issue can be either "yes" or "no". Status can be either "pending" or "completed".
I want to derive the symbology based on attributes from these two fields. If a Status is "Pending", then I want it to be displayed by SafetyIssue ("yes" or "no"). If Status is "Completed" then I want it to show a symbol that reflects that.
I'm pretty sure I have to write an expression to do this, but then I'm at a loss as for what I actually DO with the expression!
So - what expression do I write, and then what in the world do I do with it? Or are all my assumptions wrong?! Help, please!