Install Signature Field

•  
• Create new file Custom.js (or whatever you want) in modules/Touch/overrides. The app will automatically download it and extends/overwrites the default behavior. Put the following piece of code in the file:

(function() {
	if (Vtecrm && Vtecrm.app) {
		Ext.define("Vtecrm.view.ShowRecordCustom", {
			override: "Vtecrm.view.ShowRecord",
			signatureModules: ["HelpDesk", "ModuleCustom"], // ModuleCustom is your 
		});
	}
})();