Just did a test on my NEQ6 Pro with v3.27 firmware. Here are the results.
From turn-on and initial set-up:
(1) 1, 2 or 3 Star alignment > manually slew to target > Sidereal tracking is automatic
(2) No Star alignment > manually slew to target > no tracking
(3) At any time > select object from SynScan database and slew > Sidereal tracking is automatic (except for the Moon, where tracking is lunar).
Also, sidereal tracking is automatic during Star alignment, but I guess that's just a special case of "select object from SynScan database and slew".
For this and other tests of things no-one wanted to know in the first place, stay tuned!