What is a 1 to 1 and what is it for?

A 1 to 1 is a face-to-face meeting between an employee and his or her manager. These meetings are usually held periodically to exchange impressions about how the department is doing, and the employee's performance, analyze results, know the degree of employee satisfaction, solve problems, and address situations to improve among others. 

1 to 1 will help you to follow up and evaluate the situation and status of your employees in your company. Besides, you can improve the relationship and communication with your employees using this tool.