Any ways to change the auto complete behavior？

[littlemingone]

In radian, press "tab" will pop up the completion. After that, continue pressing "tab" will change the candidate completion, and I must press "enter" to confirm my choice. But I hope it can use "tab" to confirm, so I can press "tab" twice to use the first completion, like Rsutdio or Vscode do.

Also, I hope there can be a couple of () after the completion, like rstudio do.

Is there any options about these?