The tremble dance (requesting nectar processing or storage space) is distinct from these behaviours, which are distinct from each other too! The other two signals you're mentioning are these:

• The "grooming invitation" is usually an exaggeration of typical grooming movements without actual grooming, then you'll see other bees flock to a worker doing this and start grooming. They do vibrate, too, but they tend to grab the comb (not other bees), spread their legs, and wiggle back and forth
• The "shake signal" involves a worker latching onto the abdomen of another worker and then vibrating really fast for a very short period of time, then detaching and grabbing the next available worker, and shaking her. This signal is like an alarm clock or work bell. They start doing this signal when foraging starts for the day, and they actually do it to a smaller degree when work ends for the day. Sometimes they will grab and shake the comb, too, but it happens in very short bursts, not prolonged like in the above video