You can use Password Depot to start an application and pass this parameter if it supports parameters.
For example, the correct call for PuTTY is this:
Create a new password entry.
Enter your access data in the fields "Password" and "User" as usual.
Now switch to the "URLs" tab. In the "Default URL/File" field, enter or select the path to PuTTY by clicking the icon next to the input field.
Now switch to the "Advanced" tab.
Under Command Line Parameters, enter the following:
<USER>@12.345.678.123 -pw <PASS>
(replace 12.345.678.123 with your IP address)
If you now mark this new entry in Password Depot and press F5, PuTTY will open and you will be logged in with your account automatically.
HINT: Since version 12 there is a new type of entry of the same name for PuTTY. Therefore, you should use this special new type of entry and not command line parameters.