one more thing I will add is that if you pin everything to the same base object (panel), you don't have to calculate an offset from the panel for each sub item getting pinned.
set the button to where you want on the panel and pin the button to the panel,
then position the text to the button, but pin it to the panel instead of the button.
you position everything just as you have been - you just have to be sure you have the correct panel picked if there is more than one.