Workflow Issues and Duplicating Sequences or Clips
If you plan to make a massive "tryout" set of edits, you might want to create an entire sequence for them. That way, you can either delete the sequence or keep it as an alternative to possibly show a client, for example. You can duplicate an entire sequence in which to make these alternative edits by selecting the sequence in the Browser and pressing Opt+D; by selecting Edit, Duplicate; or by Ctrl-clicking a sequence and duplicating it using the resulting pop-up menu. Keep in mind that there is no limit on the number of sequences you can create within the same project.
You might use this technique to keep scenes in separate sequences until you are ready to marry them all into one sequence, especially if you have a lot of them. It's more efficient to navigate in a smaller sequence than in a larger one. You end up saving a lot of time if you break sequences with hundreds of edits into smaller sequences.
You can also use this method to create sequences that differ from each other only slightly. For example, you could create sets of commercials that are identical except for different addresses or phone numbers inserted in the same basic commercial to be aired in different markets. Just rename them with the names of the different phone numbers or addresses to keep them organized.
In a similar vein, you can duplicate, copy, and paste any object in the Browser to place a copy of it in another bin for quick access from a bin containing clips that relate to it. Remember that subclips first appear in the bin in which the clip you created them from resides. For that reason, you might want that longer master clip to be set either in its own bin or in other bins as well. You don't copy the media file; you simply create more pointers to it located where you might want to use it in multiple sorted bins . If you want to, you can delete this copied clip after subclipping from it just to have fewer objects to sort through in any given bin. Using copies of master clips is advisable so that you don't inadvertently delete the original master clip from your project. It's also possible to simply drag this master clip around from bin to bin, but I find it easy to keep duplicating it. Copy (Cmd+C) and Paste (Cmd+V) are quick keyboard commands. They allow quick copies to be made and require less scrolling around, opening and dragging windows to place the master clip where it should be. Another method is to hold down the Ctrl key while you drag a clip. This creates a duplicate while leaving the clip's original location unchanged.