BATDS How to collect items without Bendy spawning
5If you didnt want to watch, dont worry, I've got you covered
On day 1, Bendy wont spawn until you've collected 4 out of 6 items, but this also gives you the chance to run around the floor and search lockers, dead Borises, and listen to tapes without being disturbed or chased. If you have 3 items by the elevator, it's best to search around the floor and grab the other 3 items before you head back to the elevator and grab the last 3 to make a quick escape.
On day 2, Bendy will spawn as soon as you w collected 1 of 6 items. The same rules apply as day 1, just that you'll only be able to grab one item before Bendy appears.
On day 3 and past, Bendy will always spawn the moment you spawn, so unless you want to run from him, quit to the menu and go back. All your progress will be saved.
I cannot guarantee it, but I am certain that this applies for the other characters.