Question re: Zoom meeting passcodes vs. waiting room

[jendg]

My organization set up a meeting and selected 'waiting room' under the Security option. Then our supervisor made an edit to the meeting and selected both "waiting room" and "passcode" entry methods. My questions:

1) Does Zoom even work with both entry options enabled?

2) If I deselect "waiting room," keep "passcode" selected, and copy/paste the updated Zoom link (with passcode included) to wherever we include the Zoom link for people trying to access the meeting, will it cause any issues? 
The reason I ask: on a previous meeting where we had "passcode" selected and then changed the setting to "waiting room" only (and had the 'passcode' deselected), people who had the original Zoom link kept getting asked to put in the passcode (even though we had deselected it).

I hope this makes sense, and thanks for any help you can provide!