Allow to defer installation / update / whatever for X hours / days from the time a user first sees a notification
Sometimes it's useful to allow a user who has been away for some time to defer an installation for the same amount of time (in days) that other users had (e.g. Win10 Feature Updates) rather than defer until a hard deadline. It would be great to specify that an installation or update could be deferred by the user for X amount of time since the first time they were actually notified. Perhaps as a bonus also have the ability to still have a hard deadline furhter in the future.
e.g. Users have 2 weeks to install the feature update from the time they are notified but has a hard deadline of 1 months from now. If a user was on vacation for 3 weeks they only get the remaining 1 week to defer. If a user was on an extended vacation and came back after the month was up they get the update immediately.