Use this wiki plugin for trackers to display a button with a link to a page containing a tracker plugin PluginTracker. In the parameters, you will be able to specify default values for some fields.
Parameters
Plugin Manager error: trackerprefill plugin not found
The above syntax will create a button labelled "Order" that will link to tiki-index_raw.php?page=Order&prefills=2:3&values[]=Shoes&values[]=10 If the wiki page named "Order" contains a tracker plugin with 2 fields (2 and 3), the tracker form will prefill in the fields 2 and 3 values "Shoes" and "10".