In the Timeline Bar, property keyframes are represented by a mark in the same row as the property track they belong to.
Property keyframes hold the values the timeline uses when it is playing. They are at the end of the timeline hierarchy so any changes made at this level will only affect the property keyframe itself.
A property track can have many different property keyframes, one for each position in the timeline with values that must be reached when animating. Unlike master keyframes, property keyframes cannot be moved and must have a parent master keyframe. If a property keyframe's time is changed by either dragging it or changing the value in the Properties Bar, a new master keyframe will be created at the new position along with new property keyframes to go with it.
Property keyframes can be created following the same method to create master keyframes, since property keyframes will be created for each property track at a given position in the timeline.
To create property keyframes for specific property tracks, follow these steps:
If multiple property tracks are selected when using the Set keyframes option, property keyframes will be created for all of them.
Either method will always create a master keyframe along with the property keyframes.