My keyboard doesn't have a numpad and I cant activate pzb or sifa because they require you to press numpad enter.
Presumably because you're using a laptop. If there's nothing available using a modifier key of some sort I guess your only option is to use a plug-in keyboard. If you don't have one then even new they start for less than a tenner (though delivery might be a consideration ATM). If you do any typing at all you'll find almost anything better than a laptop keyboard. Edited for grammar. "You're only option..." Tut tut. Predictive typing or whatever it's called you know- anyway that's my excuse and I'm sticking to it.
I am on a desktop pc. I just have a tenkeyless keyboard. I found a solution by remapping another key into numpad enter. I thought it was impossible because the software requires you to press the key you want it to be remapped to but then I realised that I could use an onscreen keyboard.