Contact

Creates contact points between two subtools to pose one subtool with another.

The Contact feature uses a form of deformation that works best with static subtools not intended to deform or move from their source position.

Palettes > Tool > Contact

For posing non-static subtools such as clothing, Transpose Master is the recommended solution. Learn more in this guide's Posing Essentials section.

ZBrush for iPad's Contact features work the same as in ZBrush desktop. Learn more in the following external ZBrush guides:
Contact
Posing Your Model > Contact