Insert PPTX slides into middle of another PPTX via VSB

[Harlow]

I am currently using Excel VBA to build a 100 page PPT deck. I am being asked to include PPTX slides from another source in my weekly deck. I have tried to find a VBA to import/insert the existing slides in the middle of my VBA. Would anyone have a code i can use? I have found several online, but they are combining everything in the folder into a PPT file. I want to be able to specifically identify the file name as a dynamic value. I dont know how to write code from scratch, so any help is appreciated

NOTE: The subject should say VBA, not I cannot figure out how to exit the subject.