If a take item is online and you change the number you can update it on air by taking it again. Select the online take item, and hit enter on the numpad, or just double click the online take item. You don't have to take it offline to do this.
For data pages:
- create 2 groups in sequencer
- add your scene to one group
- add your scene 8 times (or as many times as you want to update) to the second group, and update each take item with different numbers (or any content)
- set second group to be data page
- bring scene in first group online
- bring scenes online in the second data page group and it will apply the different
It will look like this:
#XPression