To add a second entry for your second SPID, you need to move your cursor to the line number (under the # sign) and hit the letter "i" for insert. This will add a line number 2 and you can put in the second number and SPID.
This is similar to how you add entries to the DIAL PLAN as well as adding entries to the IN#ACCEPT list.
By the way, the letter "d" is for delete - but be careful because it does not ask for confirmation - it simply deletes the line.
Hope this helps.