You can predefine the arguments for the nrf-terminal.startTerminal command to save time and avoid providing these arguments every time. This sort of customization can be used with the serial port and the RTT connection actions and requires installing and using a third-party extension for Visual Studio Code, for example Commands.
To see the list of arguments for which you can provide values, see the nrf-terminal.startTerminal reference section.
The steps to predefine these arguments depend on the extension you decide to use and are outside of the scope of this documentation.