Adding More animating frames/time to animate character model movements

Can’t add more animating frames/time to animate character model movements

I have created a skeletal mesh and I am trying to animate a basic run animation on unreal engine 5.

I go to the skeletal mesh and double click to open. I click on “create asset” and “create animation” “current pose”. Once I am in the animating window I can not add any sample frames to the created animation. I am stuck at 1 frame. How do I add more time/frames to animate with so that I can create a basic run animation. Please help.

Let me know if you need anymore information.

More Info: Under asset details it’s the “number of samples frames” and “number of sampled keys” is dark grey and locked. I can not change them to add more or take away. Is there a reason why it’s locked?