If i understand what you mean, i don't think you need TFlowPanel at all and you can just use a regular TPanel (for small grids) or TScrollBox (if you want scrollbars) and modify ChildSizing with Layout set to cclLeftToRightThenTopToBottom and ControlsPerLine to the number of columns you want. You can also set the spacing properties to allow space between the controls and/or the Enlarge/Shrink Horizontal/Vertical properties to force children use the full width/height. I did a quick test[0] and seems to work fine. Note that as this uses the controls' automatic sizing, the controls will always be resized to match their autosize, however you can use the Constrains property to set a minimum (or maximum) size and/or use a TPanel for a "cell" so you can specify whatever size you want (or have cells with multiple controls).

[0] https://i.imgur.com/DZBrSvh.png