Yes, the very visible/big FAQ link of the addon, mentioned in the very visible 1st "sticky" comment inside the addon (
https://www.esoui.com/downloads/info...ItemSaver.html), is telling you this
Check the FAQ's filter buttons entry.
The positioning is inside the submenus for each inventory type (backpack, bank, ...) and it should work if you change these values.
Read the tooltips of the settings please and press the RETURN key to acknowledge the changes in the editboxes.