[jve]

Moving, resizing, adding is so hard. Clicking on some obscure icon within toolbar, that doesn't even feature tooltip for more explanation and then multiple clicks to get down to the operation I want...

It is natural to be able to drag. Maybe pressing some key so that doesn't happen accidentally, or have some snap in corner that must be dragged.

Resizing... we do intuitively within OS for decades...

Adding. Perhaps + sign can be added in the adjacent column/row, that spawns new one.

Having other commands within right click would also be helpful. Well, that's at least how we are used to use word/excel.

[Zeminary]

I'll add in drag to move points.

What's the problem with drag to resize?

I'll add tooltips as someone else suggested earlier.

I'll add hover options to make it easier to add new rows and columns.

I've been relying on hotkeys for a long time (you can click the question mark to see the interactions and hotkeys available to you). Thanks for bringing up those mouse-related UI problems.