Archive timeframe

I've noticed some releases are in the charts longer than the standard 10 day cycle. How do you get that to happen? Thanks
Link
Most likely because other bands are promoting, either all the time the song is in the charts, or before the song is put in to archive they release a new song, start promoting and the old song gets promotion bonus as well.
Link
Ok thanks.  I'll have a play around with that and see what happens. Mostly I've been on a cycle of write - record - release - promote 3 days, gig 1 day back to writing/recording. 
Link
That's a good system
Link