For a breakdown of the TeamDynamix License type definitions, see this article: https://solutions.teamdynamix.com/TDClient/KB/ArticleDet?ID=7340
The only requirements for a user to be able to approve time are as follows:
- Have access to TDNext
- Have access to Time & Expense
- Have users reporting to them
I hope this fully answers your question about approving time. If you need further clarification on any of this, or have more questions please let us know.