Concat including plaintext

You are right that this doesn't work easily, Seth.  But try this: add multiple fields to create multiple 'slots' for the Concat and then go back and edit them by typing in the fixed text you want.  Note that you don't need a separate slot for the colon.  You just have 
Concat(Call to Action: , Task Name)

Hi Seth,

This is straight forward to implement.
1. Select call to action field.
2.Enter the value(which is    :<space>   in your case), and then click on Enter/tab/Right arrow.
3. Now select task name field.

And every formula supports enter/tab/right arrow for navigation.

 

Thanks, guys!