If you want to make a mod instead, and share your custom requests with any other player, follow this guide.
Create a folder, let's say it is called "ALEXANDRA_CR", with an info.txt file (the description of the mod) and a "scripts" folder: inside the latest folder, create a new text file and call it "repeatable_quests.gd":
ALEXANDRA_CR |-- scripts | |-- repeatable_quests.gd |-- info.txt
Inside repeatable_quests.gd write:
func questarray():
<AddTo 1>
#INSERT YOUR CUSTOM REQUESTS HERE
and append your custom requests. When the mod is loaded, they will be added to the original file.