I have no idea what hwm means so I'm assuming it's a ragdoll.

How to spawn ragdoll:
open the spawn menu with q (or f1 for the help menu, these buttons depend on the controls you use in options) and select the spawn menu tab in the upper left area then scroll through the list searching for keywords like skeleton, hwm, or enhanced (you can use the search function if you want to but it can take longer), hover over the main window to see if any highlighting shows up (hopefully it has a picture) then click it to spawn it

How to use player model:
Hold c, click playermodel and then head to the yellow box at top right of all your playermodel's icons. Type a keyword, and click to apply, you will need to suicide if you don't have apply immediately active in enhanced playermodel selector.

if there is no image you can fix it by heading to the same spawn menu, right click the playermodel's icon (it'll spawn a ragdoll but should have something like p, player, or playermodel somewhere in the name, it can also be the one named ragdoll too if you don't see a change) and select the option with the pencil icon to adjust it.

There Isn't any Playermodel.

just put skeleton