First of all, go to the Connector page as shown. where you will find all the available Connectors.
By default, you can only activate a single connector, but if you want to activate multiple connectors, one must Add New Connector.
After that, you have to enter your account credentials for both Sandbox and live mode, and then select the type of connector.
Once you enable this setting, you can activate multiple connectors on the list.
You can switch that connector to the live and test modes on the connector list.
HOW TO CHANGE THE DEFAULT CONNECTOR?
You can Change the Default Connectors settings as shown below.
SWITCHING CONNECTOR
You can also set the criteria for auto-switching based on the selected timeline.
For the amount, auto-switching will only occur for successful transactions within your chosen timeline.
For the percentage, auto-switching will only take place if the total transaction count exceeds 20 within your selected timeline, as a percentage.
MULTI CONNECTOR
You can manage multi routing with specific multi routing category using this options. You can assign multiple mid into specific category. Transaction will automatically route into specific category while using this category options.