How to put things in brackets and what is this in the blue circle and how can I copy this?

• Jul 18, 2024 - 11:03

I want to copy this piece on Musescore as is so I can listen to it and print a better-quality sheet.
How can I put fermata in brackets (upper red circle), and the lower two notes in brackets (lower red circle)?
And what is this in the blue circle and how can I copy this?

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Screenshot 2024-07-18 115612.png 443.55 KB

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