@jlheberl

It is not supported. :( Now, you may delete an existing tag first and then add a new one. Tags can be deleted only on the web version. Here is a video, http://www.youtube.com/watch?v=0lvs1xbrFGs.

Shall you need any other help or have additional questions, please do not hesitate to contact us.

Thanks for your support on Doit.im.