Idea Summary
When selecting Page Items from a list, for example Items to Submit, Items to Return, Set Values in Redirect, etc. sort the Page Items alphabetically and allow multi-select.

Use Case
Presently, there is not an apparent Page Item sort order in select lists unnecessarily consuming time when selecting Page Items, especially when more than one is needed.  The multi-select saves by not having to repeatedly go back to the select list and find the next Page Item.

Preferred Solution (Optional)
Minimally, simply sort the select lists by Page Item Name, or Region/Page Item; and have Ctrl/Shift+ work for multi-select, or check boxes to select more than one Page Item.