So I posted 2 videos earlier tonight through #steemleo's LEOTube interface at https://tube.steemleo.com/.
When you post through a SCOT.tube your post automatically gets whichever tribe tag, the dtube tag, and the additional tag that you select in the d.tube interface.
The videos I put up tonight went to #steemleo, #dtube, and #spt. But I also wanted them to list on #palnet. So I edited the posts to add the tag.
Unfortunately, it didn't work. Or at least hasn't so far.
There should be 2 posts below the resteem and above the Then You Win post.
If anyone knows how to get more than 2 tribe tags on a d.tube post, let me know in the comments!