Almost no arms, no knees, would still like it rigged

[Benjamin23228104no31]

I have a problem, the character I want to use, needs to be rigged (since I don't know how to, hence why I'm using Mixamo), It doesn't have hands (even if I use the no fingers option it doesn't help), and knees, so I would like to know if I need to use another character. Help would be much appreciated

[Ussnorway]

the knees must be below the groin... i would also move the chin up a bit and disable synergy but this model may need to be remade with longer legs