Control block not showing

hi,
i have try to crate some screen.
but on the block section, control block not showing.

Please guide me .

Thanks
Tarun

Change your Blocks Toolkit to Default in Project Properties

Where I can find project properties option. Please guide me.

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You must be in a Project.

If Classic, look for Project Properties button.
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..
If Neo, look for 2 gears.
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