Default position of custom symbols

I'm really happy Musescore is featuring Persian accidentals, but also I need several symbols for ornaments. Some I find in the master palette, for others I have to import SVGs. Unfortunately most of the time I add a symbol it's behind the note. When I click on proterties in the palette I can just adjust the position of the symbol inside the palette, but not the default position of the symbol after I added it to a note in the score. Would be great to have a possibilty to adjust the default positions of custom symbols. I use them a lot and it's a lot of work adjusting every single one of them manually.

I was searching for a workaround, but didn't find any. So sorry if I was missing something.