This is a very basic app - cannot add a picture or other details, and does only Dial a number. There are other great apps available in the market that can do these.
Tags: direct dial widget, direct dial, direct call widget, widget direct dial, how to use drag and drop in, how to arrange buttons in, direct call, direct dialer, drag and drop, sdk tab between tabs.
1. Use Menu->Re-Org to re-arrange buttons (Drag and Drop)
2. Add contacts from call log
3. Swipe to move between tabs