How to create Groups Category on Phone

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http://forum.xda-developers.com – Hello I've been searching everywhere for help on creating a separate category called "groups" next to "phone", "call log", and "favorites". I need this function due to the fact I do property management and i need to know which house belongs to which tenant. Is it possible to make it on this phone? Since it is already built in most modern phones. (HowTos)