[AC Question]

Hello.
I'm looking for an app which would allow me to send a 'task list' to many colleagues. They would not be able to alter the list in any way apart from changing the date the tasks occur, and possibly hide some tasks. Each colleague would be able to enter different dates and these would not affect other colleagues, so the sharing function offered by Todoist and other apps would not work for me.
Does anyone have any suggestions?
Thanks for your help,
L