How to make Scrollable and Resizable (to vertical way) Maintained Window?

[MirageKnight]

Ah thx for advice. I found that my MinimumScrollExtent line should be for entire UI not only table for the buff.

By adding,
MinimumScrollExtent="255,900"

it seems I could made how I wanted.

Just I hope I could add more than 30 buff listed for maintained window, but 30 is the limit right?

Thanks again for your help.