I believe, maintaining leads, contacts or customer database using Zoho CRM is not something only you have subscribed for. You need a customized solution utilizing the various features of the CRM that will best fit with your business work flow . At this point, I do analyze your business workflow or requirements and then love to take challenges to set up and functioning the Zoho CRM for your business. Once it will be functioning, it will help to maximize the ROI as well.
If require, I can provide training to admin or sales rep.