For a while now, I have been using the OneTab extension for organizing my many browser tabs. I'm not entirely satisfied with it, so I went looking for something else. Multi-Account Container Tabs sounded more like what I needed. But it isn't turning out that way. I've created my containers -- after deciding on the order I want, as you cannot (apparently) rearrange them once created. But none of the instructions are quite clear on how to now assign all my favorite tabs to the correct containers. The instructions posted by Mozilla talk about sending links from pages but not so much about assigning specific tabs to containers. I have managed to do this by accident once or twice; no idea how. But for the most part, even though I select the option to "reopen in [name] container," and even though it appears to do so (in that it duplicates the tab and puts a color-coded line at the bottom of the tab), as soon as I close the tab, it is no longer listed under that container. Also, it seems only sporadically to retain the pinned tabs as pinned. This whole process seems to be pointless if the extension can't retain the tabs in the containers where I reopen them (which is the only method I've seen so far to get them into a specific container) so that they can be pulled up again when that group is needed. I must be missing something. Could other extensions be interfering? (My context menu doesn't look quite like the images in the instructions, but at least the "reopen in [name} container" is an available option, even if I have to go an extra step to get to the actual list of containers. I don't mind going the extra step and can clear up my context menu later; but why bother using this extension if the containers can't retain the web site tabs I assign them to (again, assuming that "reopening" to a specific container is the way to do this ... and maybe it isn't, but I can't find another way)? NOTE: I don't want to simply assign random links to containers; I want my specific TABS to open when I choose a container. Again, I've read the instructions provided by Mozilla. Either 1) they aren't clear enough, 2) this extension doesn't do what I thought it did, or 3) I am missing something big-time. Any help would be appreciated. My tabs are now all messed up and duplicated several times. It's a wonder I have any RAM left at all.