I need help with customizing the "UI KIT" sample source

Currently, I am building a service using the React version of the “UI KIT” sample. The URL of the “UI KIT” sample source I used is this.
=> [ github > sendbird-uikit-react ] ( samples > groupchannel )

[ question. 1 ]
When I open the “ChannelSetting” window after running this sample source, the location is shown below at the bottom of the page.

Could you please explain where I need to modify the sample source so that when the “ChannelSetting” window is opened it opens and closes on the left side of the page, just like the demo page?
=> [ sendbird > demos ]

[ question. 2 ]
The Find Messages button on the demo page above is missing from the sample source.

Can you also explain which part of the sample source needs to be modified to add this?

[ question. 3 ]
The profile image in the dialog on the demo page above is missing from the sample source.

Also can you explain which part of the sample source needs to be modified to add this?

Thank you in advance for your valuable reply.

Hello @2_2,

Since you are building off the UIKit sample from the sendbird-uikit-react repository. Could you please share your CustomizedApp.js file?