How to put wild area events into your save:
The block keys you're gonna need to use for the blocks are KBonusRewards, KDaiEncount, KDropRewards, KNormalEncount, KNormalEncountRigel1, KNormalEncountRigel2.
We have the wild area files here: https://projectpokemon.org/home/search/?q=Wild Area Event&type=downloads_file&nodes=203&updated_after=any&sortby=relevancy&search_and_or=and&search_in=titles
How to put items into your save:
It's not that hard to figure out.
Items button will open a new form.
The select the correct tab (remember how in-game different items go into different tabs?), the change the item and value, then save.