There are multiple ways to do that.
1. Create a custom step type, with these settings. So every time, you drag the new type of step, it will be set that way.
2. Create a sequence, what can scan through your seuence file and change the settings for all message popups in the sequence file. You can put it into the Tools menu. So you need to invoke this tool, to change the settings for each message popups in your sequence file.
3. Change the step settings runtime, in a callback override. For example in an engine callback override. Before the step you check if it is a message popup, and if yes, change the settings.
Which way you prefer?
