cytropics Hi,
1) As apparently seen, JA Custom Search is being rendered in the main-body as seen on demo site in which default Joomla Search component has been enhanced with functionality to select/unselect from various areas alongwith styling upgrade for JA City. The similar custom options are also seen when we click on the "search" tab
The search feature encompasses all the major and usual areas which are searched in site
You can add this to custom.css file if you are wishing to hide any of the labels to be not shown :
label[for=area-categories]{/* ...categories... */display: none;}
label[for="area-contacts"]{/* ...contacts... */display: none;}
label[for="area-content"]{/* ...articles... */display: none;}
label[for="area-tags"]{/* ...tags... */display: none;}
however, Adding a new area/option to be searched would require custom coding and heaps of customizations which is beyond our support scope. You may kindly hire developer or agency for this task
2) You can assign module type (Tag-popular) to trend-tag and the specific module will fetch popular tags accordingly :
This module displays tags used on the site in a list or a cloud layout. Tags can be ordered by title or by the number of tagged items and limited to a specific time period.