Hi @Anonymous
What you want to do is something like this.
1. Add a Choice (single select) to your SharePoint list. Add a bunch of options (like what you have above as examples)
2. In your Canvas App, on your New and EditForm, it will now list this column and people will be able to select it and change it as they wish.
No real trick to it, its pretty straight forward
Since you said function, I wasnt sure what you mean by function, so instead I simply gave what you would do.
Some other details
Normally you would have
1. a gallery to list of all the Tasks, but filtered to that person
2. They click a row and it takes them to an Edit form, which you would have added (like my above comments). That Edit Form, would have the Same Source as the Gallery, and in the Item property you would put, MyGallery.Selected
-This would cause it to load the SharePoint item selected in the gallery
3. You would have a Button, usually labelled Submit
-The button code would be SumitForm(EditFormControlName).
And thats it.
You would usually have a + sign or something that says "Create New" in which case it would take them to the Form that is now in NEW mode, not EDIT mode.
Again using the same SubmitButton to submit the form. I know i called it the EditForm but you can call it whatever. The new/edit mode is something you can do programmatically.
If I have helped you, I would really appreciate if you please Mark my answer as Resolved/Answered, and give it a thumbs up, so it can help others
Cheers
Thank You
Michael Gernaey MCT | MCSE | MCP | Self-Contractor| Ex-Microsoft
https://gernaeysoftware.com
LinkedIn: https://www.linkedin.com/in/michaelgernaey