Connexys is an application on Salesforce CRM software, and hence we offer you on this page several links to Salesforce documentation about Roles and Profiles.
Profiles define how users access objects, fields, page layouts, Apex classes and Visualforce pages and data, and what they can do within the application. Profiles help determine record privileges. Assuming the User can see the record, Profiles determine what the User can do, view or edit on that record. Profiles control other system privileges as well (mass email, export data, etc). When you create users, you assign a profile to each one.
Look here for more information on Salesforce Help.
Create a Profile and/or a Role
1. Go to the Salesforce Setup
2. Use the Quick Find box to find Roles and/or Profiles.
3. Just under the company name, click Add Role or in case of Profiles click on Add Profile