If you were splitting your duties to cover multiple functions such as office admin (answering emails, sitting in business meetings ) and doing some HR work too (helping to recruit job applicants and interview them). Then you enter it as 1 position and pick the noc code that represents the majority of your duties.
If you first worked in one job such as an office secretary and got promoted to work as a project manager, then you enter it as 2 separates roles.
Some things that can help determine is if you signed a new contract/or not and/or got a new title.
