아, 그렇군요. 감사합니다!

Hi - tandem verbs are easily decoded if you add the plain meanings of words concerned. Actually "잡다" means hold and "놓다" put, respectively. Then if you add two words together, it could be intuitively transliterated as "put on hold". There are various meanings in "놓다" and it is widely used in Korean, therefore you might want to get familiar with all of them.

물고기를 잡아놓다. 강도를 잡아놓다 catch something or someone and put it or somebody somewhere ^^ hope it helps