How can I create a border like this using InDesign CC2018?
Is it possible to create a border of stars that is adjustable when the border is enlarged or reduced in size?

Is it possible to create a border of stars that is adjustable when the border is enlarged or reduced in size?

You can't do this in InDesign. In Illustrator you could do this several ways including making a pattern brush or using a blend. You're best bet would be to create it in Illustrator and then place it in InDesign. If you need to adjust it, edit the link, adjust in Illustrator, then update in InDesign. Not quite as easy as having it right there in InDesign but pretty simply nonetheless.
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