Keyboard Shortcuts for Relocating the Play Start Marker
In Dynamic Transport mode, you can use keyboard shortcuts to quickly relocate the Play Start Marker either during playback or when the Transport is stopped.
To move the Play Start Marker to the Timeline Selection Start:

Press Period (.) on the numeric keypad and then the Left Arrow.
To move the Play Start Marker to the Timeline Selection End:

Press Period (.) on the numeric keypad and then the Right Arrow.
To move the Play Start Marker to the Edit Selection Start:

Press Period (.) on the numeric keypad and then the Down Arrow.
To move the Play Start Marker to location of the Playhead:

Press Period (.) on the numeric keypad and then the Up Arrow.
To nudge the Play Start Marker backward (rewind):

Press 1 on the numeric keypad.
To nudge the Play Start Marker forward (fast forward):

Press 2 on the numeric keypad.
To move the Play Start to a specific bar:

With Bars|Beats selected as the Main Timebase ruler, do the following on the numeric keypad:
a. Press Asterisk (*).
b. Type the bar number.
c. Press Enter.