HUD display properties - priority

[whitespid3r]

Is there some priority with display properties ?

Lets say i want to display HUD only for reg.

I can do this by three ways :

1. By select whole tab, and setup display condition for reg.
   

2. By select several cells and setup display condition for reg.
   

3. By select single cell and setup display condition for reg.
   

Question : is there some priority ?