Quick feedback: As a user, i am unsure as to why we need to click on magnifying glass below for search when we have to attach the existing component group to selected DDP since we already have 1 magnifying next to where you type the search name

Here are the best cases for UI:

1) You start typing & it shows what's existing matching there (like google search autosuggestion)

2) If not, then atleast have 1 magnifying glass next to where you are typing & user clicks it shows all the ones having containing the typed name

3) Even if above 2 don't work, atleast remove the one next to where component group is typed, then user knows they need to click on bottom magnifying glass as this is the only 1 available