Providing feedback to the user is a MUST
No matter which approach you take, the user should be given a response/feedback of some sort.
Say, you go with the inline edit approach, there must be a confirmation feedback of some sort like:
- Loading animation that turns into a checkbox
- A confirmation notification
- A significant change in element styling (size, shape, font weight, tonality, borders...)
- A pop-up confirmation (not recommended)
If not, simply add a Done or a Save button
