I have seen references in posts about manually advancing time between missions [ by say a week at a time rather than morning to night of same day or to next day] but I don't see how to do this in my existing campaigns.

Is this something you have to select before you start the campaign?

Is there something I am missing when I go to start a new mission that will let me advance the time?

Inquiring minds would like to know.

Enable it in Workshop
"Campaign Date Advance" onto Manual/Auto

now you have a button in campaign.

In the workshop the "campaign date advance" option needs to be set to "manual/auto". When you get to the first campaign page there will be a "T+" box in the lower right corner. Click on that to manually advance either a day, a week, or a month.

Thanks!

Thanks!