Checking and installing updates regularly is essential to keep your computer running efficiently. Installing updates fixes software and system errors and protects your computer from viruses and malware. The software update can be done in the "Software Update" window.
Steps

Step 1. Open the "Software Update" window
- Open the Apple menu.
- Click "Software Update".

Step 2. You can set the frequency of software updates or enable automatic updates
- Check the box next to "Check for updates" and then select the update frequency (daily, weekly, or monthly) from the menu on the right.
- Check the box next to "Download updates automatically" to enable automatic updates (the system will notify you about the update and may ask you to restart your computer).

Step 3. You can check for software updates at any time
Click "Check now". The computer will check for available software updates and notify you of them

Step 4. Choose all available updates (recommended) or only specific updates
Check the box next to each update you want to install. If you are not sure which updates to choose, read the update description

Step 5. After completing the installation of updates, you may need to restart your computer
- Click “Install” after selecting the required updates.
- Enter your account name and password to start the installation process (or your administrator account name and password if you are logged in with a different account).