This Bambu Lab Poop Chute is very Advanced and this is how you use it.

First you get a double sided tac or anything that will make the item stick to the printer and apply it to the item and stick it to the back of the printer with the entery point of the slide aline with the exit hole of the printer.

Second get any bag of your choice and a zip tie, then put the bag around the exit hole of the item and after zip tie it around the outlined area. 

Third after your bag of choice is filled with access filament cut the zip tie with the item of choice and if your having trouble doing so near the logo on the model there is a little notch where pliers can be inserted in order to help cut the zip tie.

(I recommend a type of clippers that are made for cutting zip ties)

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For the non container version i just put a bucket next to mine and worked perfectly