Pencil end and joint style shortcut

PLEASE FOR THE LOVE OF GOD, I have to click these two GD buttons so much during my day. Its literally the only reason I have to keep the stupid tool properties window open all the time. Make it ANYTHING, I’ll reassign it. but PLEASE.

This one thing shortcut could increase my productivity by more than anything else. All I want is to press a button and have all selected lines get round ends.