I work on a project in SMPTE and when I want to go to a specific second, I do not see this option because the "G" option (Go) uses only MBT format.
Does anyone know how to go to a specific second rather than a bar?

I can think of two things to try (not at my DAW today).
 
1. Selecting the Display All Times as SMPTE check box in Edit > Preferences >
Customization to see if that gives you the option to enter SMPTE in the Go dialogue.
 
2. Entering the time in HMSF format 00:00:00:00 to see if the Go dialogue recognized the format difference from MBT 00:00:00.

Very well. 
Thank you!