In PowerPoint, what is the best approach to work with design layout for slides?

Question

In PowerPoint, what is the best  approach to work with design layout for slides?

Answer

Using the Slide Layout tool when inserting a new slide

Answer

By editing the Slide Master for each intended slide layout

Answer

By inserting a blank slide, then adding placeholders on it

Answer

Using the Design tab and choosing one of the preset templates

Crowdly