HELP: 3D Renderpeople into cycling position (how to) won’t save!

Hi everyone,
HELP! I am desperately struggling to put the 3D Renderpeople into cycling position. If I do so in the editor, it does not save in the Engine. Anyone knows how to change their position an keeping it that way, without creating new animations? Even if I have to create an animation, how do I do so? Would mixamo be an option and how to import a mixamo animation? Basically just want to put people on my bike and making itlook realistic, nothing else! Thank you for all the help and replies in advance!