Hi @Otar_Melia 
Welcome to the community 
You should be able to either click on the node you want to copy, and hit ctrl/cmd + c to copy it and then ctrl/cmd + v to paste it in a new workflow, no problem 
Creating your own workflow templates however is a bit trickier. You can find some information in this thread about it:
What may be more useful for you here is to click the three dots at the right side of a workflow, and then click duplicate:
