take it from here
Also, take it from there. Continue from a certain point onwards, as in I've done what I could with correcting the blatant errors; you'll have to take it from here. [Mid-1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.