To add a 'marker' in Live, when working in the Arrangement View, right-click the top Scrub area (under Beat Time Ruler) and select Add Locator to place a locator marker at the playhead's current position.
To add a 'marker' in Live, when working in the Arrangement View, right-click the top Scrub area (under Beat Time Ruler) and select Add Locator to place a locator marker at the playhead's current position.