Micro spray emitters are a great way to get even coverage for small areas. They are most commonly used in annual flower beds. They can be added directly to existing lateral lines but be aware that there is no filter if you install this directly to a zone that is not already drip. If you are simply installing micro sprays or bubblers, you may be able to get away with not having a filter, but if this is being used to add drip emitter, there is a high chance that the emitter will get plugged.
You will want to have a separate 1/4" connection for each micro spray. This is because they require a large volume of water to be supplied at a single point, thus a 1/4" tube is unlikely able to supply more than one micro spray.
Stretch your tubing out and stake it in place so it will be the proper length to reach the micro spray emitter that you are installing.
After cutting the tubing to the proper length, press the tubing firmly onto the provided connector. Note that each brand has a different setup and slightly different connector. Simply work with what is available in your area.
Press firmly into the ground or bury as needed.
Test and adjust as needed or where applicable.