Missing controls?
Or maybe I just haven't found these. In the web interface....
* Set the context for a string.
* Add a new string (i.e., +) on the page with the strings.
* Reorder strings by dragging.
1. You can add Context to a term in the Terms page, hovering your button over the desired term and clicking on the C button: https://poeditor.com/kb/view-or-add-terms
2. You can add terms (keys) in the Terms page, as well: https://poeditor.com/kb/how-to-manually-add-delete-terms
3. You can re-order terms as explained here: https://poeditor.com/kb/how-to-reorder-terms-localization-project
Unfortunately, a drag and drop option is not available at this time.