Once a Contact is created, you can edit the information to make sure it stays relevant. Within the app site, you can select a specific Contact or search for the Contact you'd like to update. From there, you can click on any information associated with the Contact and click enter to save.
This will allow you to go into the Contacts as you notice changes in title and contact information. Under the Contacts, you can add notes on the right hand side of the Contacts page. This will allow you to keep updated notes so you always know the latest update as you prep for meetings with the contact.