1. Center an element:
All you have to do is to add a Text element with a Vertical Blank Space shortcode:
[push h="15" hide_low_res="true" class=""]
2. Align right an element:
All you have to do is to add a Text element with a Vertical Blank Space shortcode as described in point #1 and change the elements' layouts using the + and - icons.
Please check this guide for more reference: Guide to VamTam Drag and Drop Builder / Visual Composer