To change the value, I have to be more accurate currently, landing on the button control itself (as in the lower screenshot).

I would like to suggest that, when the Multiparameters are "Locked", the MP value could be changed by dragging anywhere within the full area of the MP (as edged by the orange border in the screenshot) except for the context menu button. So if I land almost anywhere within that area and drag the value will change. (For the avoidance of doubt: that orange border is only to show the active area, I am not expecting to see it in the plug-ins
Might I also suggest that the Help text is revised to read "Prevents the Multiparameters window from being displayed. This settings is applied to all Multiparameters but is not stored."
