Unit of time

Can I change the unit of time from days to weeks?
For instance a task might be 3 weeks long starting week 33. (We use Swedish week numbers).

Welcome to the Community Forum @David_Evans!

You can set start date to your task so you know how long it should take. Please note start dates are currently a paid feature. Please find more details in this Guide article

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I hope this helps! Let me know if you have follow up questions.