Yes. You can mark several items in the list at the same time if you want to make the items green or grey. However, it is not possible to mark several deviations at the same time. 

To mark several items at once, do the following: 

  1. Tap on the green icon in the bottom right corner: 

2. Tap on select multiple items

3. Mark optional items on the list.
4. Tap on the green or grey button - the items are now marked either green or grey.

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