Collaborating on Smartsheet - editing data with a Pro account


I am trying to use Smartsheet to manage a product creation project with a team of 4 who need access to the sheets. 2 of those people need to be able to edit the data, however under my Pro license, it seems that even when I create an admin or editor, they are unable to change any of the data.

Does the 2nd person have to have their license under my account in order for this to work?